水面上飘着浮渣。There were impurities in the water.撇渣过频或操作不当会使浮渣损失很大.Frequent skimming or improper skimming can cause a much higher dross loss.用外行人的话来说,浅成岩最好称为 “ 浮渣 ”.In the language of the layman the Epicrustal rocks can best b...

“浮渣”的英语可以翻译为：dross，scum，[医] scum，scruff ...