winnow/ˈwɪnoʊ/第三人称winnows现在进行时winnowing过去式winnowed过去完成时winnowed1扬谷, 将谷粒与谷壳分开to blow the chaffs out of the grains2扬, 簸blow away or off with a current of air同义词： fan3筛选, 选择select desirable parts from a group or list同义词： cull out4扬, 吹blow on