n a strainer for separating lumps from powdered material or grading particles
v examine in order to test suitability
v check and sort carefully
v separate by passing through a sieve or other straining device to separate out coarser elements
v distinguish and separate out
n. 筛, 漏勺( sieve的名词复数 )
v. 筛, 漏勺( sieve的第三人称单数 )