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BNC: 12214 COCA: 11313

upstream

Word family
Related topics: Water, Geography
up·stream /ˌʌpˈstriːm◂/ adverbadv  
TTWSGalong a river, in the opposite direction from the way the water is flowing 向上游;逆流() OPP downstream
 Fish instinctively fight their way upstream against the current.
鱼本能地奋力逆流而上。
upstream adjectiveadj
Examples from the Corpus
From Longman Business Dictionary
upstreamup·stream /ˌʌpˈstriːm◂/ adjectiveadjECONOMICSMANUFACTURING
relating to an activity, product etc on which other activities etc depend or that happen before other activities
Upstream technologies such as electronics and optics improve the performance of manufacturing machinery
compare downstream
upstream adverbadv
up·stream adverbadv
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