rat /ræt/ CET4 TEM4 ( ratting, ratted, rats )

• 1. 

  N-COUNT A rat is an animal which has a long tail and looks like a large mouse. 老鼠

  例：

  This was demonstrated in a laboratory experiment with rats.

  这点通过在实验室中用老鼠做试验得到证明。

• 2. 

  N-COUNT If you call someone a rat, you mean that you are angry with them or dislike them, often because they have cheated you or betrayed you. 卑鄙小人 [非正式]

  例：

  What did you do with the gun you took from that little rat Turner?

  你要用从卑鄙小人特纳那里弄来的那支枪干什么呢？

• 3. 

  V-I If someone rats on you, they tell someone in authority about things that you have done, especially bad things. 告发 [非正式]

  例：

  They were accused of encouraging children to rat on their parents.

  他们被指控怂恿孩子们告发他们的父母。

• 4. 

  V-I If someone rats on an agreement, they do not do what they said they would do. 违约 [非正式]

  例：

  She claims he ratted on their divorce settlement.

  她声称他违背了他们的离婚协议。

• 5. 

  PHRASE If you smell a rat, you begin to suspect or realize that something is wrong in a particular situation, for example that someone is trying to deceive you or harm you. 感觉事情不妙

  例：

  If I don't send a picture, he will smell a rat.

  如果我不寄张照片，他会起疑心。