scumming roll电动调向辊
scumming detail泛霜
scumming g起脏
scumming effect渣状泡沫效应
anti-scumming agent消浮垢剂
ozone induced scumming臭氧感生未显影光刻胶形成
N-PLURAL（复数型名词） If you refer to people as scum, you are expressing your feelings of dislike and disgust for them. 令人厌恶的人 [非正式]
She never would have even spoken to scum like him when Mom was alive.
妈妈活着的时候她是绝不会和像他这样令人厌恶的人说话的。
N-UNCOUNT（不可数名词） Scum is a layer of a dirty or unpleasant-looking substance on the surface of a liquid. (液体表面的) 浮垢
...scum marks around the bath.
…浴缸周围的垢迹。