n.大老鼠；似鼠动物；鼠辈，卑鄙小人；vi.捕鼠；背叛，告密； 变形： 复数：rats过去式：ratted过去分词：ratted现在分词：ratting第三人称单数：rats 双语释义：n.(名词)[C]大老鼠 a long-tailed animal related to but larger than the mouse[C]卑鄙小人,叛徒 a worthless disloyal personv.(动词)vi. 捕鼠 hunt ratvi. 变节; 食言; 叛变 break an agreement