n the act of separating grain from chaff
v move as if through a sieve
v separate by passing through a sieve or other straining device to separate out coarser elements
v check and sort carefully
v distinguish and separate out
n. 筛, 过滤, 筛过的东西, 滤下来的杂质, 筛下来的杂质, 滤过的东西
[计] 筛选, 淘汰