| 单词 | signal |
| 释义 | signal (sɪgnəl ) Word forms: signals , signalling , signalled regional note: in AM, use signaling, signaled 1. countable noun B2 A signal is a gesture, sound, or action which is intended to give a particular message to the person who sees or hears it. They fired three distress signals. As soon as it was dark, Mrs Evans gave the signal. You mustn't fire without my signal. Synonyms: cue, sign, nod, prompting 2. verb If you signal to someone, you make a gesture or sound in order to send them a particular message. The United manager was to be seen frantically signalling to McClair. [VERB preposition/adverb] He stood up, signalling to the officer that he had finished with his client. [VERB that] She signalled a passing taxi and ordered him to take her to the rue Marengo. [VERB noun] 3. countable noun If an event or action is a signal of something, it suggests that this thing exists or is going to happen. Kurdish leaders saw the visit as an important signal of support. [+ of] The first warning signals came in March. The Red Cross is withdrawing its staff until they receive clear signals from all sides that their presence is welcomed. 4. verb If someone or something signals an event, they suggest that the event is happening or likely to happen. She will be signalling massive changes in energy policy. [VERB noun] Britain was signalling its readiness to have the embargo lifted. [VERB noun] The outcome of the meeting could signal whether there is a political will to begin negotiating. [VERB wh] Synonyms: show, express, display, indicate 5. countable noun A signal is a piece of equipment beside a railway, which indicates to train drivers whether they should stop the train or not. 6. countable noun B2 A signal is a series of radio waves, light waves, or changes in electrical current which may carry information. ...high-frequency radio signals. 7. adjective [ADJECTIVE noun] You use signal to describe a success or failure when you are emphasizing the fact that it has occurred and are indicating that the consequences are significant. [emphasis] His final round was a signal triumph in a career marked by many sweet moments. ...Marlantes's signal failure to master some of the more central aspects of novel writing, including character, pace and style. signally adverb [usu ADV before v] ...a demoralised party which its leader signally failed to reassure. Collocations: mixed signals It's important not to send out mixed signals. Times, Sunday Times (2015) Mixed signals on the American economy have also put stocks on the back foot. Times, Sunday Times (2014) These rather cheery forecasts come from the balancing of decidedly mixed signals. Times, Sunday Times (2010) So while we agree that a corporation tax cut would send a powerful signal, it must be done alongside a wider review of tax policy. Times, Sunday Times (2016) Yet, there is hardly a more powerful signal for managers than compensation and compensation structure. MANAGEMENT: task, responsibilities, practices (1974) Turning up is often the most powerful signal of all. Times, Sunday Times (2014) The results are likely to shape the remainder of his first term in office and signal the start of the presidential election campaign for 2012. Times, Sunday Times When hearing someone's name makes you smile, it could signal the start of an amazing romance. The Sun Moving into the new house was supposed to signal the start of a recuperative year off. Times, Sunday Times When it comes to your love life, the return of someone who has been working away could signal the start of special love. The Sun From next week the warmth will disappear as clouds roll in to signal the start of autumn. Times, Sunday Times In the condition, impaired signal transduction in cone cells leads to total colorblindness, decreased visual acuity, and intense sensitivity to sunlight. The Scientist (2000) Proteins may bind to intracellular scaffolds to optimize signal transduction. The Scientist (2000) Most cell surface receptors for growth factors and cytokines dimerize in order to mediate signal transduction. 2009, 'A bipolar clamp mechanism for activation of Jak-family protein tyrosine kinases.', PLoS Computational Biology Protein-ligand interactions are a necessary prerequisite for signal transduction, immunoreaction, and gene regulation. 2018, 'Insights into the Molecular Mechanisms of Protein-Ligand Interactions by Molecular Docking and Molecular Dynamics Simulation: A Case of Oligopeptide Binding Protein', Computational and Mathematical Methods in Medicine Remarkably, intranuclear lipid-dependent signal transduction pathways are regulated independently from their membrane/cytosolic counterparts. 2009, 'Nuclear expression of diacylglycerol kinases: possible involvement in DNA replication', European Journal of Histochemistry Fibers are used instead of metal wires because signals travel along them with less loss and are also immune to electromagnetic interference. Retrieved from Wikipedia CC BY-SA 3.0 Because these signals travel close to the surface and lower frequencies produce lower resolutions, low-frequency systems are generally used for tracking ships, rather than aircraft. Retrieved from Wikipedia CC BY-SA 3.0 The distance can be directly calculated from the time of arrival as signals travel with a known velocity. Retrieved from Wikipedia CC BY-SA 3.0 These signals travel along the optic nerve fibers to the brain, where they are interpreted as vision in the visual cortex. Retrieved from Wikipedia CC BY-SA 3.0 The level of neurofilament gene expression seems to directly control axonal diameter, which in turn controls how fast electrical signals travel down the axon. Retrieved from Wikipedia CC BY-SA 3.0 Components designed to stop signal interference, among others, represented an estimated fifth of its sales. Times, Sunday Times Police had chased it for six miles but said they gave up the pursuit when the car ran the stop signal. The Sun Try to agree on what you will try together but also agree some boundaries and a stop signal, so no one gets pushed beyond their comfort zone. The Sun The stop signal latches all flip-flops while propagating through its channel undelayed and the start signal can not propagate further. Retrieved from Wikipedia CC BY-SA 3.0 At the stop signal, incomplete answers can not be completed. Retrieved from Wikipedia CC BY-SA 3.0 I have been selected by my company to go on a management training course, which is a strong signal of my future promotion prospects. Times, Sunday Times (2013) The company has been hamstrung by the deficit for years but yesterday sent a strong signal that it had got to grips with it. Times, Sunday Times (2012) Investors should send a strong signal that this kind of ad hoc bung is unacceptable. Times, Sunday Times (2006) It's time to send a subtle signal that you're interested. The Sun (2012) I seem to have lost the language of subtle signals. Times, Sunday Times (2011) The horses are very perceptive and can pick up the most subtle signals. Times, Sunday Times (2009) Digital satellite television signals are radio waves, which are also used to broadcast other types of signals. Times, Sunday Times The shift to an on-demand world must be completed by 2012, when the final analogue television signals are switched off, he said. Times, Sunday Times That's because the airwaves needed to broadcast television signals belong to everybody, not just you. Globe and Mail As a matter of broadcast engineering practice, 4:3 analogue television signals will always pose the most problems with broadcast safe compliance. Retrieved from Wikipedia CC BY-SA 3.0 A transponder received and transmitted voice and television signals and scientific data. Retrieved from Wikipedia CC BY-SA 3.0 Eventually, however, he was able to show that, theoretically, cables of sufficient purity, using fused silica glass, could transmit a signal with sufficient strength to be practical over any distance. Times, Sunday Times Such loss effectively robs power from the transmitter, requiring a stronger transmitter in order to transmit a signal of a given strength. Retrieved from Wikipedia CC BY-SA 3.0 Angle modulation alters the instantaneous phase of the carrier wave to transmit a signal. Retrieved from Wikipedia CC BY-SA 3.0 Special purpose radio time signal stations transmit a signal that allows automatic synchronization of clocks, and commercial broadcasters still include time signals in their programming. Retrieved from Wikipedia CC BY-SA 3.0 Zone control uses a wireless transmitter to transmit a signal in a fixed area. Retrieved from Wikipedia CC BY-SA 3.0 But it was an error not to have a visual signal to the coverage inside. Times, Sunday Times It uses 14 high-speed cameras, with the indication of whether a goal has been scored confirmed within one second by a vibration and visual signal on each match official's watch. Times, Sunday Times Most people are unable to initiate pursuit without a moving visual signal. Retrieved from Wikipedia CC BY-SA 3.0 Many insects can detect polarization of light, so it has been proposed that this feature may be used as a visual signal between moths. Retrieved from Wikipedia CC BY-SA 3.0 Busy ports used a visual signal, the dropping of a ball, to allow mariners to check the chronometers used for navigation. Retrieved from Wikipedia CC BY-SA 3.0 Reflecting now on my actions, I can sense at least two warning signals that should have alerted me to my problem. Christianity Today (2000) We had warning signals going throughout the plane. Times, Sunday Times (2013) Your body is giving you a warning signal that something is wrong. POSITIVE THINKING: Everything you have always known about positive thinking but were afraid to put into practice (2001) This means the laptop will be better able to set up and hold a connection in a weak signal area such as your garden. Times, Sunday Times The radio has poor reception in weak signal areas. Times, Sunday Times Fire up the app and it runs two tests to estimate wireless speed and detect data loss caused by a weak signal. Times, Sunday Times Runners want a low impedance (no more than 64 ohms, most pairs are 16) which will generate a decent noise from the relatively weak signal of a portable player. Times, Sunday Times This boosts the very weak signal from the stylus to a level high enough that the regular amp can work with it. Times, Sunday Times They work by sending a wireless signal to the car, which activates the central locking system. Times, Sunday Times Plug in to the socket: speeds can degrade over a wireless signal ? Times, Sunday Times It gives superb wireless coverage and range and has a more powerful wireless signal than ever before. The Sun It also displays various information such as date and time, the wireless signal status, controller battery life and controller settings. Retrieved from Wikipedia CC BY-SA 3.0 Cubical walls, drywall, glass, and windows generally do not degrade wireless signal strength. Retrieved from Wikipedia CC BY-SA 3.0 Yet I have to be careful not to act too casual with committees; it can broadcast wrong signals. Christianity Today (2000) More bad driving is now being classified as just being careless and that to us is sending out all the wrong signals. Times, Sunday Times (2012) Their continuing petulant behaviour sends out all the wrong signals for sportsmanship. Times, Sunday Times (2014) Translations: Chinese: 信号, 发信号 Japanese: 合図, 合図する |
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