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upstream

adverb
🔊/ˌʌpˈstriːm/
🔊/ˌʌpˈstriːm/
(also less frequent upriver)
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  1. upstream (of/from something) along a river, in the opposite direction to the way in which the water flows向（或在）上游；逆流
    • The nearest town is about ten miles upstream.最近的城镇大约在沿河向上十英里处。🔊🔊
    • upstream of/from the bridge在桥的上游
    opposite downstreamTopics Geographyc1
    Oxford Collocations DictionaryUpstream is used with these verbs:
    • swim
    See full entry