| 释义 |
downstream
down·stream D0369200 (doun′strēm′)adv.1. Toward or closer to the mouth of a stream; in the direction of the current: floated downstream.2. At a later point in a production process or supply chain.adj.1. Being or moving closer to the mouth of a stream; in the direction of the current.2. Later in a production process or supply chain.downstream (ˈdaʊnˈstriːm) adv, adj1. (Physical Geography) in or towards the lower part of a stream; with the current2. (Navigation) in or towards the lower part of a stream; with the current3. (Mining & Quarrying) (in the oil industry) of or for the refining, distribution, or marketing of oil or its derived products. Compare upstream2down•stream (ˈdaʊnˈstrim)
adv. 1. in the direction of the current of a stream. adj. 2. pertaining to the latter part of a process. 3. Genetics. with or in the direction of transcription, translation, or synthesis of a DNA, RNA, or protein molecule. [1700–10] Thesaurus| Adj. | 1. | downstream - in the direction of a stream's currentupstream - in the direction against a stream's current | | Adv. | 1. | downstream - away from the source or with the currentdownriverupriver, upstream - toward the source or against the current |
Translationsdown1 (daun) adverb1. towards or in a low or lower position, level or state. He climbed down to the bottom of the ladder. 向下 向下2. on or to the ground. The little boy fell down and cut his knee. 往地上，到地上 往地上3. from earlier to later times. The recipe has been handed down in our family for years. 從上一代到下一代 从早些时候到晚些时候4. from a greater to a smaller size, amount etc. Prices have been going down steadily. （金額等）下降 （物价等）下降 5. towards or in a place thought of as being lower, especially southward or away from a centre. We went down from Glasgow to Bristol. 下行地 下行地 preposition1. in a lower position on. Their house is halfway down the hill. 在…下方 （表示位置）在…的下方 2. to a lower position on, by, through or along. Water poured down the drain. 沿著…往下 （表示方向）沿着…向下 3. along. The teacher's gaze travelled slowly down the line of children. 沿著 沿着 verb to finish (a drink) very quickly, especially in one gulp. He downed a pint of beer. 很快喝完(尤指一口氣) （指大口或快速地）喝下 ˈdownward adjective leading, moving etc down. a downward curve. 往下的 向下的ˈdownward(s) adverb towards a lower position or state. The path led downward (s) towards the sea. 往下地 向下地down-and-ˈout noun, adjective (a person) having no money and no means of earning a living. a hostel for down-and-outs. 貧困潦倒 贫困潦倒，落魄 ˌdown-at-ˈheel adjective shabby, untidy and not well looked after or well-dressed. 衣衫襤褸的 衣衫褴褛的ˈdowncast adjective (of a person) depressed; in low spirits. a downcast expression. 垂頭喪氣的 垂头丧气的ˈdownfall noun a disastrous fall, especially a final failure or ruin. the downfall of our hopes. 垮台 垮台ˌdownˈgrade verb to reduce to a lower level, especially of importance. His job was downgraded. 降級(尤指從高位) 降低等级ˌdownˈhearted adjective depressed and in low spirits, especially lacking the inclination to carry on with something. Don't be downhearted! – we may yet win. 沮喪的，消沉的 沮丧的，消沉的 ˌdownˈhill adverb1. down a slope. The road goes downhill all the way from our house to yours. 下坡 下坡2. towards a worse and worse state. We expected him to die, I suppose, because he's been going steadily downhill for months. 每況愈下 趋向衰退，每况愈下 downˈhill racing noun racing downhill on skis. 速降滑雪賽 速降滑雪赛downˈhill skiing noun 速降滑雪 速降滑雪ˌdown-in-the-ˈmouth adjective miserable; in low spirits. 沮喪的，消沉的 凄悲的，消沉的 down payment a payment in cash, especially to begin the purchase of something for which further payments will be made over a period of time. 頭期款，訂金 （分期付款中的）头期款，预付定金 ˈdownpour noun a very heavy fall of rain. 傾盆大雨 倾盆大雨ˈdownright adverb plainly; there's no other word for it. I think he was downright rude! 十足地，完全地 十分地，完全地 adjectiveHe is a downright nuisance! 徹底的 彻底的ˈdownstairs adjective , ˌdownˈstairsadverb on or towards a lower floor. He walked downstairs; I left my book downstairs; a downstairs flat. 樓下的 楼下的ˌdownˈstream adverb further along a river towards the sea. We found/rowed the boat downstream. 順流而下 顺流而下ˌdown-to-ˈearth adjective practical and not concerned with theories, ideals etc. She is a sensible, down-to-earth person. 腳踏實地的 脚踏实地的ˈdowntown adjective (American) the part (of a city) containing the main centres for business and shopping. downtown Manhattan. (美)市中心 城市商业区的，闹市区的 ˌdownˈtown adverb (also down town) in or towards this area. to go downtown; I was down town yesterday. 在市中心 在市中心，在城市商业区 ˈdown-trodden adjective badly treated; treated without respect. a down-trodden wife. 受壓迫的，被蹂躪的 受压制的，被蹂躏的 be/go down with to be or become ill with. The children all went down with measles. 染上(疾病) 染上...病down on one's luck having bad luck. 倒楣 倒霉，不走运 down tools to stop working. When the man was sacked his fellow workers downed tools and walked out. 停止工作 停止工作down with get rid of. Down with the dictator! 打倒(獨裁者) 打倒，除掉 get down to to begin working seriously at or on. I must get down to some letters! 開始認真處理 开始认真对待suit (someone) down to the ground to suit perfectly. That arrangement will suit me down to the ground. 完全適合 很适合downstream
downstream in or towards the lower part of a stream; with the current downstream[′dau̇n‚strēm] (chemical engineering) Portion of a product stream that has already passed through the system; that portion located after a specific process unit. (genetics) Further along in the direction of transcription on one strand of the deoxyribonucleic acid sequence of a gene; for a linked gene, downstream may be in the opposite direction along the chromosome. (hydrology) In the direction of flow, as a current or waterway. downstreamFrom the provider to the customer. Downloading files and Web pages from the Internet is the downstream side. The upstream is from the customer to the provider (requesting a Web page, sending email, etc.). In cable TV, downstream signals are the network, movie and sports channels transmitted to the customer. However, if the cable provider offers video-on-demand or Internet access, the cable also has an upstream.
Not Symmetrical
Internet access speeds are typically not symmetrical, with the downstream rate being considerably faster than the upstream. The slower upstream prevents users from operating websites. For fast upstream Internet connections, the customer can sign a business-oriented service agreement, if available, or use specialized providers that accommodate datacenters and high-speed servers. See download and download vs. upload.downstream
Cardiology The direction of blood flow, specifically in vessels flowing from the heart
Molecular biology A position on a molecule of interest—e.g., protein or DNA—that is ‘beyond’ or in front of a reference point; the term downstream differs according to the system involveddownstream In genetics, at a stage in the sequence of processes in the expression of a gene that is nearer the final protein product than any stage in the direction of the DNA. The term is also used to mean in the direction of the 3'-end of a chain of bases in DNA (see PHOSPHODIESTER BOND). In both cases the opposite sense is called ‘upstream’.downstream (of a LOCUS on a DNA MOLECULE) relating to a position in the direction in which TRANSCRIPTION occurs, often after the transcription start site in DNA and towards the last coding region to be transcribed. By convention the DNA sequence of genes is shown from 5' (left) to 3' (right) so that ifX is on the 3' side of Y it is described as being downstream of Y. Compare UPSTREAM.Downstream
DownstreamThe transfer of corporate activity from the larger parent to the smaller subsidiary.DownstreamIn energy companies, relating to operations after production up to the point of sale. For example, an oil company's operations related to refining oil and selling gasoline to certain distributors are considered downstream. Some companies provide downstream operations exclusively, but most are integrated, providing both upstream and downstream operations.downstream Of or relating to earnings or operations at a firm that are near or at the final stage of consumption. For example, marketing and transportation are downstream operations for a large, integrated oil company. Compare upstream.AcronymsSeeD/Sdownstream
Related to downstream: upstreamSynonyms for downstreamadj in the direction of a stream's currentAntonymsadv away from the source or with the currentSynonymsAntonyms |