sifting ['sɪftɪŋ]

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附加级

n.筛，过滤v.筛( sift的现在分词 )；筛滤；细查；详审

He lay on the beach, sifting the sand through his fingers. 他躺在沙滩上用手筛砂子玩。来自《简明英汉词典》
I was sifting the cinders when she came in. 她进来时，我正在筛煤渣。来自辞典例句