| 释义 |
catapult
cat·a·pult C0155600 (kăt′ə-pŭlt′, -po͝olt′)n.1. Any of various military machines used for hurling missiles, such as large stones or spears, in ancient and medieval times.2. A mechanism for launching aircraft at a speed sufficient for flight, as from the deck of a carrier.3. A slingshot.v. cat·a·pult·ed, cat·a·pult·ing, cat·a·pults v.tr.1. To hurl or launch from a catapult.2. To hurl or launch by means other than a catapult: The blast catapulted bricks across the street.3. To bring suddenly into prominence: The film catapulted her into fame.v.intr.1. To be catapulted or hurled: The rider catapulted over the handlebars.2. To jump or spring: She catapulted over the gate.
[French catapulte, from Old French, from Latin catapulta, from Greek katapaltēs : kata-, cata- + pallein, to brandish, poise a weapon before hurling; see pāl- in Indo-European roots.]catapult (ˈkætəˌpʌlt) n1. a Y-shaped implement with a loop of elastic fastened to the ends of the two prongs, used mainly by children for shooting small stones, etc. US and Canadian name: slingshot 2. (Arms & Armour (excluding Firearms)) a heavy war engine used formerly for hurling stones, etc3. (Military) a device installed in warships to launch aircraftvb4. (tr) to shoot forth from or as if from a catapult5. (foll by: over, into, etc) to move precipitately: she was catapulted to stardom overnight. [C16: from Latin catapulta, from Greek katapeltēs, from kata- down + pallein to hurl]cat•a•pult (ˈkæt əˌpʌlt, -ˌpʊlt)
n. 1. an ancient military engine for hurling stones, arrows, etc. 2. a device for launching an airplane from the deck of a ship. v.t., v.i. 3. to hurl or be hurled from or as if from a catapult. 4. to move quickly, suddenly, or forcibly. [1570–80; < Latin catapulta < Greek katapéltēs=kata- cata- + péltēs hurler, akin to pállein to hurl] cat`a•pul′tic, adj. catapultA structure which provides an auxiliary source of thrust to a missile or aircraft; must combine the functions of directing and accelerating the missile during its travel on the catapult; serves the same functions for a missile as does a gun tube for a shell.catapult
Past participle: catapulted
Gerund: catapulting
| Imperative |
|---|
| catapult | | catapult |
| Present |
|---|
| I catapult | | you catapult | | he/she/it catapults | | we catapult | | you catapult | | they catapult |
| Preterite |
|---|
| I catapulted | | you catapulted | | he/she/it catapulted | | we catapulted | | you catapulted | | they catapulted |
| Present Continuous |
|---|
| I am catapulting | | you are catapulting | | he/she/it is catapulting | | we are catapulting | | you are catapulting | | they are catapulting |
| Present Perfect |
|---|
| I have catapulted | | you have catapulted | | he/she/it has catapulted | | we have catapulted | | you have catapulted | | they have catapulted |
| Past Continuous |
|---|
| I was catapulting | | you were catapulting | | he/she/it was catapulting | | we were catapulting | | you were catapulting | | they were catapulting |
| Past Perfect |
|---|
| I had catapulted | | you had catapulted | | he/she/it had catapulted | | we had catapulted | | you had catapulted | | they had catapulted |
| Future |
|---|
| I will catapult | | you will catapult | | he/she/it will catapult | | we will catapult | | you will catapult | | they will catapult |
| Future Perfect |
|---|
| I will have catapulted | | you will have catapulted | | he/she/it will have catapulted | | we will have catapulted | | you will have catapulted | | they will have catapulted |
| Future Continuous |
|---|
| I will be catapulting | | you will be catapulting | | he/she/it will be catapulting | | we will be catapulting | | you will be catapulting | | they will be catapulting |
| Present Perfect Continuous |
|---|
| I have been catapulting | | you have been catapulting | | he/she/it has been catapulting | | we have been catapulting | | you have been catapulting | | they have been catapulting |
| Future Perfect Continuous |
|---|
| I will have been catapulting | | you will have been catapulting | | he/she/it will have been catapulting | | we will have been catapulting | | you will have been catapulting | | they will have been catapulting |
| Past Perfect Continuous |
|---|
| I had been catapulting | | you had been catapulting | | he/she/it had been catapulting | | we had been catapulting | | you had been catapulting | | they had been catapulting |
| Conditional |
|---|
| I would catapult | | you would catapult | | he/she/it would catapult | | we would catapult | | you would catapult | | they would catapult |
| Past Conditional |
|---|
| I would have catapulted | | you would have catapulted | | he/she/it would have catapulted | | we would have catapulted | | you would have catapulted | | they would have catapulted |
Thesaurus| Noun | 1. |  catapult - a plaything consisting of a Y-shaped stick with elastic between the arms; used to propel small stonesslingshot, slingplaything, toy - an artifact designed to be played with | | 2. | catapult - a device that launches aircraft from a warshiplauncherdevice - an instrumentality invented for a particular purpose; "the device is small enough to wear on your wrist"; "a device intended to conserve water" | | 3. |  catapult - an engine that provided medieval artillery used during sieges; a heavy war engine for hurling large stones and other missilesarbalest, arbalist, ballista, bricole, mangonel, onager, trebuchet, trebucketengine - an instrument or machine that is used in warfare, such as a battering ram, catapult, artillery piece, etc.; "medieval engines of war" | | Verb | 1. | catapult - shoot forth or launch, as if from a catapult; "the enemy catapulted rocks towards the fort"propel, impel - cause to move forward with force; "Steam propels this ship" | | 2. | catapult - hurl as if with a slingslinghurl, hurtle, cast - throw forcefully |
catapultnoun1. sling, slingshot (U.S.), trebuchet, ballista They were hit twice by missiles fired from a catapult.verb1. shoot, pitch, plunge, toss, hurl, propel, hurtle, heave He was catapulted into the side of the van.Translationscatapult (ˈkӕtəpalt) noun (American ˈslingshot) a small forked stick with an elastic string fixed to the two prongs for firing small stones etc, usually used by children. 彈弓 弹弓 verb to throw violently. The driver was catapulted through the windscreen when his car hit the wall. 彈射 弹射catapult
catapult (someone or something) into (something)To suddenly thrust one into a particular situation or condition, often fame. That award-winning role really catapulted the actor into stardom.See also: catapultcatapult someone or something into something 1. Lit. to throw someone or something into a place using a catapult. The soldiers catapulted the huge stone into the fortress. 2. Fig. to thrust or force someone or something into something, such as fame, glory, front-page news, etc. The success catapulted her into the spotlight. The scandal catapulted the contractual arrangements into public scrutiny.See also: catapultcatapult
catapult (kăt`əpŭlt'), mechanism used to throw missiles in ancient and medieval warfare. At first, catapults were specifically designed to shoot spears or other missiles at a low trajectory (see bow and arrowbow and arrow,
weapon consisting of two parts; the bow is made of a strip of flexible material, such as wood, with a cord linking the two ends of the strip to form a tension from which is propelled the arrow; the arrow is a straight shaft with a sharp point on one end and
..... Click the link for more information. ). They were originally distinguished from ballistae and trebuchets, both of which were large military engines used to hurl stones and other missiles, but these distinctions later blurred. Later, larger catapults mounted on a single arm also hurled stones, pots of boiling oil, and incendiaries at a high trajectory. They were used to attack or defend fortificationsfortification,
system of defense structures for protection from enemy attacks. Fortification developed along two general lines: permanent sites built in peacetime, and emplacements and obstacles hastily constructed in the field in time of war.
..... Click the link for more information. . Catapults were widely employed in siegesiege,
assault against a city or fortress with the purpose of capturing it. The history of siegecraft parallels the development of fortification and, later, artillery. In early times battering rams and bores were employed to break down the walls and gates of a fortified place
..... Click the link for more information. warfare, but with the introduction of artilleryartillery,
originally meant any large weaponry (including such ancient engines of war as catapults and battering rams) or war material, but later applied only to heavy firearms as opposed to small arms.
..... Click the link for more information. they passed from use. In the 20th cent. catapults using hydraulic pressure were reintroduced to launch aircraft from warships.Catapult (1) In military terminology a throwing machine activated by the elastic force of twisted cords made from sinews, hair, and so forth. Catapults were used in ancient Greece and Rome up to the end of the fifth century mainly for besieging fortresses; lightweight versions (from the fourth century B.C.) were also used in field combat. Catapults hurled stones, logs, barrels with burning tar, and other objects over distances of a few hundred meters and lances up to 185 cm long and weighing up to 1.5 kg over distances up to 150 m. (2) A device for imparting initial (launch) velocity to airplanes, gliders, and so forth on a short runway. A catapult consists of a driving apparatus (trolley, “shuttle”, hook, etc.), a guiding device (usually rails), and a launching mechanism. The driving apparatus with the aircraft attached to it is accelerated either by a jet engine or by employing the energy of steam, gunpowder, compressed air, springs, or rubber bands. Toward the end of the takeoff run, the driving mechanism is abruptly halted, and the aircraft separates from the driving apparatus with the necessary velocity for independent flight. Catapults with horizontal guiding devices are employed mainly on aircraft carriers, where steam catapults are usually employed that provide an airplane acceleration on a runway of 60–80 m up to a velocity of 200–300 km/hr. Catapults with vertical guiding devices are used for practicing ejection from airplanes on the ground, training flight crews, and studying the effects of great strains on man over short time periods. REFERENCEKorotkin, I. M., Z. F. Slepenkov, and B. A. Kolyzaev. Avianostsy. Moscow. 1964.G. M. BADAEV and E. P. GOLUBKOV catapult[′kad·ə‚pəlt] (aerospace engineering) A power-actuated machine or device for hurling an object at high speed, for example, a device which launches aircraft from a ship deck. A device, usually explosive, for ejecting a person from an aircraft. (ordnance) A mechanical device for hurling grenades or bombs. catapult i. A mechanism to launch, or hurl, objects into the air at flying speed. Catapults are used to launch heavy-loaded aircraft from decks of aircraft carriers.
ii. To eject a person from an airplane by means of a catapult.CATAPULT
Cisplatin and Tirapazamine in Subjects with Advanced Previously Untreated Non-Small-Cell Lung Tumours. A phase III trial that assessed the efficacy and safety of tirapazamine plus cisplatin for treating non-small-cell lung cancer (NSCLC)
Conclusion The median survival was significantly longer and the response rate was significantly greater for patients who received tirapazamine plus cisplatin than for those who received cisplatin alone. Tirapazamine enhances the activity of cisplatin in patients with advanced NSCLC and confirms that hypoxia is an exploitable therapeutic target in human malignanciesAcronymsSeecatalasecatapult
Synonyms for catapultnoun slingSynonyms- sling
- slingshot
- trebuchet
- ballista
verb shootSynonyms- shoot
- pitch
- plunge
- toss
- hurl
- propel
- hurtle
- heave
Synonyms for catapultnoun a plaything consisting of a Y-shaped stick with elastic between the armsSynonymsRelated Wordsnoun a device that launches aircraft from a warshipSynonymsRelated Wordsnoun an engine that provided medieval artillery used during siegesSynonyms- arbalest
- arbalist
- ballista
- bricole
- mangonel
- onager
- trebuchet
- trebucket
Related Wordsverb shoot forth or launch, as if from a catapultRelated Wordsverb hurl as if with a slingSynonymsRelated Words |