rag

He grabbed an old rag from the garage to wipe the grease off his oil-stained hands.

(Chinese) 他从车库里抓起一块旧抹布，擦掉沾满油污的手上的油脂。

The mechanic used a gasoline-soaked rag to clean the metal parts of the engine.

(Chinese) 机械师用一块浸过汽油的抹布清洗发动机的金属部件。