名词
中文翻译：风选
同义词：
['winnow', 'winnowing']
例句：
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1. The farmer used a winnowing machine to separate the grain from the chaff.
农民使用风扬机将谷物和糠分开。
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2. The wind was strong enough to winnow out the weeds from the field.
风足够强大，把田里的杂草吹走。
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3. After the rain, the wheat was winnowed clean of the chaff.
雨后，小麦被风扬干净，没有糠。