n.篩；過濾

動詞sift的現(xiàn)在分詞形式.

They are sifting the wheat from the chaff. 他們正往外篩麥殼子。

He lay on the beach, sifting the sand through his fingers. 他躺在沙灘上用手篩砂子玩。

Mine sieving mesh is a kind of metal mesh components for sifting and filtering. 礦篩網(wǎng)是一種用于篩分過濾的金屬網(wǎng)狀結(jié)構(gòu)元件。