名词筛，过滤

动词筛( sift的现在分词 ); 筛滤; 细查; 详审

1. 筛分：sifter 筛 | sifting 筛分 | siftings 筛屑

2. 过筛：sift-proof 防撒漏的 | sifter 筛 | sifting 过筛

3. 移动;筛选：sifter 回转式木片筛 | sifting 移动;筛选 | sight glass 窥镜

noun

1. the act of separating grain from chaff

e.g. the winnowing was done by women

Synonym: winnowwinnowing