sifting

名词 sifting:

1. the act of separating grain from chaff
   同义词：winnow, winnowing

动词 sift:

1. move as if through a sieve
   同义词：sift
2. separate by passing through a sieve or other straining device to separate out coarser elements
   同义词：sift, sieve, strain
3. check and sort carefully
   同义词：sieve, sift
4. distinguish and separate out
   同义词：sieve, sift

1. Sift the flour before making the cake.
   做蛋糕前先把面粉筛一下。
2. One who operates a sifting machine.
   筛粉者操作筛粉机的人