scum
Definition
A foul layer or film that forms on the surface of liquid; also, a derogatory term for a disreputable person.
中文 在液体表面形成的污秽层或膜；也指不名誉的人。
Example
"Green scum floated on the surface of the stagnant pond."
A foul layer or film that forms on the surface of liquid; also, a derogatory term for a disreputable person.
中文 在液体表面形成的污秽层或膜；也指不名誉的人。
"Green scum floated on the surface of the stagnant pond."