音标：[ræt]
n. 鼠, 卑鄙的人, 破坏者, 变节者
vi. 捕鼠, 变节
vt. 弄蓬松
【医】 鼠
相关词组:
rat on sb
like a drowned rat
like a rat in a hole
rat out
smell a rat
在线英汉词典

rat的短语、例句：

rat n 1 rodent that looks like, but is larger than, a mouse 大鼠. =>illus at App 1 见附录1插图, page iii. 2 (infml fig 口, 比喻) (a) disloyal person, esp one who deserts a cause in times of difficulty 不忠的人; （尤指困难时）背弃事业的人
So you´ve changed sides, you dirty rat! 那麽, 你改变立场了, 你这可耻的叛徒! (b) unpleasant or despicable man 讨厌的人; 卑鄙的人. 3 (idm 习语) like a drowned rat => drown. the rat race (infml derog 口, 贬) fiercely competitive struggle, esp to keep one´s position in work or life 激烈的竞争（尤指为保住职位或地位）
opt out of (ie withdraw from) the rat race 决定退出这场竞争. smell a rat => smell2. rat, v (-tt-) 1 [I] (usu 通常作 go ratting) hunt rats 去捕鼠. 2 [I, Ipr] (infml 口) (a) ~ (on sb/sth) break an agreement, a promise, etc; fail to do sth one has undertaken to do 违背协议、 诺言等; 未履行责任. (b) ~ (on sb) reveal a secret; betray sb 泄露秘密; 背叛某人
She´s ratted on us here comes the head teacher! 她把我们出卖了--瞧校长都来了!