sifting

n.

筛，过滤；

v.

筛( sift的现在分词 )；筛滤；细查；详审

sift through通过；被筛下

sift out过筛

1. They are sifting the wheat from the chaff.
   他们正往外筛麦壳子。
2. He lay on the beach, sifting the sand through his fingers.
   他躺在沙滩上用手筛砂子玩。
3. Mine sieving mesh is a kind of metal mesh components for sifting and filtering.
   矿筛网是一种用于筛分过滤的金属网状结构元件。

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Martelli MG, Ward MM, Fraser AM. Ant diversity sampling on the southern Cumberland Plateau: a comparison of litter sifting and pitfa...