英语词汇“pond scum”是什么意思，“pond scum”的读音、用法及例句翻译-烛光网

词汇	pond scum
释义	pond scumn.（名词） Any of various freshwater algae that form a usually greenish film on the surface of stagnant water.绿藻：一种淡水藻，它在死水表面形成一个通常为淡绿色的薄膜
随便看	positions positive positive feedback positive prescription positiver positives positivest positivism positivisms positron positron emission tomography positronium positroniums positrons posits posole posologies posology poss. posse posses possess possessed possessed possesses

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