the scummy surface of the polluted pond. 被污染的池塘上满是浮渣的水面。
abject cowardice; a low stunt to pull; a low-down sneak; his miserable treatment of his family; You miserable skunk!; a scummy rabble; a scurvy trick. 卑鄙的怯懦;招徕观众的卑劣噱头;卑劣的告密者;他对他家人的可耻行为;你这下流坯!;贱民;下流的骗局。