upstream
[ˈʌpˈstrim]
adj.
向上游的;
逆流而上的;
（石油工业等）上游的;
adv.
向上游;
逆流地;
n.
上游部门;
例句:
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The funeral barge...departs upstream to the wails of mourners.
来自M. Roberts
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A barrage would halt the flow upstream and lift the water level.
一道拦河坝将会在上游拦住水流，抬升水位。
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The barriers are lethal to fish trying to swim upstream.
这些障碍物对于想要往上游游动的鱼儿来说是致命的。
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Cities upstream use the river to get rid of sewage.
上游的城市将污水排放到河里。
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Farther upstream, the village before yours does the same.
来自NEWYORKER
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Technical acumen in cell culture including upstream and downstream bio-processing.
来自SA