upstream
美 [ʌpˈstrim]英 [ʌpˈstriːm]
- adv.逆流;向(或在)上游
- adj.(石油工业等)上游的;溯流而上的
- 网络上行;逆流而上;向上游

upstream
1.~ (of/from sth)向(或在)上游;逆流along a river, in the opposite direction to the way in which the water flows
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