If you sift a powder such as flour or sand, you put it through a sieve in order to remove large pieces or lumps.
例句
Sift the flour and baking powder into a medium-sized mixing bowl.將面粉和發(fā)酵粉篩入中等大小的攪拌碗中。
VERB
細(xì)查;詳審
If you sift through something such as evidence, you examine it thoroughly.
例句
Police officers have continued to sift through the wreckage following yesterday's bomb attack...警察繼續(xù)仔細(xì)檢查昨天炸彈襲擊后留下的殘骸。Brook has sifted the evidence and summarises it clearly.布魯克已經(jīng)仔細(xì)審查過證據(jù)并將其總結(jié)得一清二楚。