单词：winnow
vi. 扬谷, 分出好坏, 飞翔
n. 扬谷, 扬谷器
v. separate the chaff from by using air currents
v. blow on
考试类型：[GRE]
winnow的用法和样例：
例句
- A device for winnowing grain.簸谷器; 风选机去糠的设备
- The girl is winnowing the chaff from the corn.那个女孩正在簸去谷壳。
经典引文
The tea is..winnowed and sifted, so as to free it from impurities.
出自：E. Forbes
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