| 释义 |
upstream
up·stream U0138500 (ŭp′strēm′)adv.1. Toward or closer to the source of a stream; in the direction opposite to that of the current: paddling upstream.2. At an earlier point in a production process or supply chain.adj.1. Being or moving closer to the source of a stream; in the direction opposite to that of the current: upstream traffic; an upstream dam.2. Earlier in a production process or supply chain.upstream (ˈʌpˈstriːm) adv, adj1. (Physical Geography) in or towards the higher part of a stream; against the current2. (Commerce) (in the oil industry) of or for any of the stages prior to oil production, such as exploration or research. Compare downstream2up•stream (ˈʌpˈstrim)
adv. 1. toward or in the higher part of a stream; against the current. adj. 2. directed or situated upstream. 3. against or opposite to the direction of transcription, translation, or synthesis of a DNA, RNA, or protein molecule. [1675–85] Thesaurus| Adj. | 1. |  upstream - in the direction against a stream's currentdownstream - in the direction of a stream's current | | Adv. | 1. |  upstream - toward the source or against the currentupriverdownriver, downstream - away from the source or with the current |
Translationsup (ap) adverb, adjective1. to, or at, a higher or better position. Is the elevator going up?; The office is up on the top floor; She looked up at him; The price of coffee is up again. 往上 向上2. erect. Sit/Stand up; He got up from his chair. 直立起來 成直立姿势 3. out of bed. What time do you get up?; I'll be up all night finishing this work. 起(床) 起（床） 4. to the place or person mentioned or understood. A taxi drove up and she got in; He came up (to me) and shook hands. 移向某處或某人 朝（某人或某物）的方向，向…的地方 5. into the presence, or consideration, of a person, group of people etc. He brought up the subject during the conversation. 向(某人)提出 向…提出（话题） 6. to an increased degree eg of loudness, speed etc. Please turn the radio up a little!; Speak up! I can't hear you 提高(聲音、速度等) （声音、速度等）变高 7. used to indicate completeness; throughly or finally. You'll end up in hospital if you don't drive more carefully; Help me wash up the dishes!; I've used up the whole supply of paper; He tore up the letter. (表示動作完成的程度)完全地 （表示动作完成的程度）完全地 preposition1. to or at a higher level on. He climbed up the tree. 往或在高處 向或在高处2. (at a place) along. They walked up the street; Their house is up the road. 沿著... 沿着...，向... 3. towards the source of (a river). When do the salmon start swimming up the river? 往...(河流的)源頭 到...（地方） verb – past tense, past participle upped – to increase (a price etc). They upped the price that they wanted for their house. 提高(價格) 提高（价格） ˈupward adjective going up or directed up. They took the upward path; an upward glance. 往上的 向上的ˈupward(s) adverb (facing) towards a higher place or level. He was lying on the floor face upwards; The path led upwards. 向上，朝上 向上，上升 ˌup-and-ˈcoming adjective (of eg a person starting a career) progressing well. an up-and-coming young doctor. 漸露頭角的 积极进取的，很有前途的 ˌupˈhill adverb up a slope. We travelled uphill for several hours. 上坡 上坡 adjective1. sloping upwards; ascending. an uphill road. 上坡的 上坡的2. difficult. This will be an uphill struggle. 艱難的，費力的 艰难的，费力的 ˌupˈstairs adverb on or to an upper floor. His room is upstairs; She went upstairs to her bedroom. 樓上 楼上 noun – plural upˈstairs – the upper floor(s). The ground floor needs painting, but the upstairs is nice; (also adjective) an upstairs sitting room. 樓上(的) 楼上（的） upˈstream adverb towards the upper part or source of a stream, river etc. Salmon swim upstream to lay their eggs. 朝著(河流的)上游 向上游（的） be up and about to be out of bed. I've been up and about for hours; Is she up and about again after her accident? 下床走動 下床走动be up to1. to be busy or occupied with (an activity etc). What is he up to now? 忙於... 忙于...事情2. to be capable of. He isn't quite up to the job. 勝任 胜任...工作3. to reach the standard of. This work isn't up to your best. 達到…水平 达到...水平4. to be the duty or privilege of. It's up to you to decide; The final choice is up to him. 由...來決定 由...来决定up to as far, or as much, as. He counted up to 100; Up to now, the work has been easy. 直到... 直到...up to date1. completed etc up to the present time. Is the catalogue up to date? 最新的 最新的2. modern and in touch with the latest ideas. This method is up to date. 現代的 现代的IdiomsSeeswim upstreamupstream
upstream1. in or towards the higher part of a stream; against the current 2. (in the oil industry) of or for any of the stages prior to oil production, such as exploration or research upstream[′əp¦strēm] (chemical engineering) That portion of a process stream that has not yet entered the system or unit under consideration; for example, upstream to a refinery or to a distillation column. (hydrology) Toward the source of a stream. upstream (networking)Fewer network hops away from a backbone orhub. For example, a small ISP that connects to theInternet through a larger ISP that has their own connectionto the backbone is downstream from the larger ISP, and thelarger ISP is upstream from the smaller ISP.upstreamFrom the consumer to the provider. See downstream and download vs. upload.upstream
up·stream (ŭp'strēm), Refers to nucleic acid base sequences proceeding the opposite direction from expression.upstream In genetics, at a stage in the sequence of processes in the expression of a gene that is further away from the final protein product. The term is also used to mean in the direction of the 5'-end of a chain of bases in DNA (see PHOSPHODIESTER BOND). In both cases the opposite sense is called ‘downstream’.upstream (of a LOCUS on a DNA molecule) relating to a position in the opposite direction to that in which TRANSCRIPTION occurs, often before the transcription start site in DNA. By convention, the DNA sequence of genes is shown from 5′ (left) to 3′(right), so that if A is on the 5′ side of B, A is upstream of B. Compare DOWNSTREAM.upstream
UpstreamIn energy companies, relating to exploration and production operations. For example, an oil company's operations related to discovering new oil reserves and the pumping of new oil from the ground are considered upstream. Upstream operations may also include initial operations like political risk analysis. Some companies provide upstream operations exclusively, but most are integrated, providing both upstream and downstream operations.upstream Of or relating to earnings or operations at a firm that are near or at the initial stages of producing a good or service. For example, exploration and production are upstream operations for a large integrated oil company. Compare downstream.AcronymsSeeunderseaupstream
Synonyms for upstreamadj in the direction against a stream's currentAntonymsadv toward the source or against the currentSynonymsAntonyms |