好词典

upstream

UK /ˌʌpˈstriːm/US /ˈʌpˌstrim/

词源

源自中古英语 upstreem,由 up(向上) + stream(溪流)组合而成,最早记录于15世纪。

adverb

❶ 指沿着河流向源头方向移动或位于河流的上游位置,与水流方向相反。常用于描述位置、方向或与水相关的活动。

“The fish are swimming upstream to spawn.”

(鱼儿正逆流而上产卵。)

“We hiked upstream to find the waterfall.”

(我们向上游徒步寻找瀑布。)

同义词:upriver, against the current, toward the source

adjective

❶ 形容位于生产过程早期阶段或供应链起始端的事物,通常涉及原材料或基础组件。

“The company invested in upstream oil exploration.”

(该公司投资了上游石油勘探。)

“Upstream suppliers provide raw materials for manufacturing.”

(上游供应商为制造提供原材料。)

同义词:initial, early-stage, primary

常见短语

go upstream — 字面指逆流而行,比喻克服困难或反主流趋势行动。

“Sometimes you need to go upstream to achieve your goals.”

(有时你需要逆流而上才能实现目标。)

upstream and downstream — 描述供应链或生产流程的完整环节,上游指原料端,下游指消费端。

“The report analyzes both upstream and downstream market trends.”

(该报告分析了上下游市场趋势。)