名词
中文翻译：上游限制
同义词：
['upstream limitation', 'upstream control']
例句：
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1.The river's upstream restriction is causing problems downstream.
河流的上游限制正在导致下游出现问题。
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2. The government has implemented several upstream restrictions to reduce pollution.
政府已经实施了多项上游限制措施以减少污染。
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3. The upstream restriction measures are designed to prevent overfishing in the affected areas.
这些上游限制措施旨在防止在受影响地区过度捕捞。