scumming

n. 撇渣(吐渣, 浮渣)

例句与用法：

These scum who fight at the football matches must be severely dealt with!

必须对那些专在足球比赛时打架的社会渣滓严加惩处！

When the meat is boiling, remove the scum.

当肉煮沸时，把浮在上面的浮渣撇掉。

I wouldn't have anything to do with those scum.

我不会和那些无耻之徒来往。

词形变化：