生物医药大词典
英文: The ink won't rub out.
中文: 这种墨水擦也擦不掉。英文: Dogs never want a foot rub.
中文: 狗不会让你给它擦脚。英文: Rub the mud off your trousers.
中文: 把你裤子上的泥擦掉.英文: Rub up the skillet please.
中文: 请把长柄锅擦亮。英文: I'll have to rub up my mathematics.
中文: 我得把数学复习一下。