rat是什么意思

rat英音：[ræt]美音：[ræt] 名词 n. [C]1.鼠Rats carry very nasty diseases. 老鼠传播讨厌的疾病。 2.【口】卑鄙小人;叛徒;告密者3.【美】【口】女用发垫不及物动词 vi. 1.捕鼠The cat went ratting. 猫去捉老鼠了。 2.背叛;密告[(+on)]They said they'd help but they've ratted on their friends. 他们说他们会帮忙的,但他们却背叛了朋友。