
好词典

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。
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。)
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。)
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。)