(of a liquid )液体 having a layer of bubbles or an unpleasant substance on the surface 浮沫;浮垢;浮渣 scummy water 有浮垢的水
- (informal)
an offensive way to describe people who you think are very bad 描述你认为很糟糕的人的冒犯性方式 scummy people dropping litter 不讲公德、乱丢杂物的人