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TOEFL IELTS BNC: 3139 COCA: 3558

rat

Word family
Related topics: Animals
rat1 /ræt/ ●●○ noun [countableC]  
1. HBAan animal that looks like a large mouse with a long tail 大老鼠
2 spokenBAD PERSON someone who has been disloyal to you or deceived you 卑鄙小人,骗子
 But you promised to help us, you rat!
可你答应过要帮我们的,你这小人!
3. look like a drowned rat WETto look very wet and uncomfortable 看上去像只落水老鼠
Examples from the Corpus
4. (like) rats leaving the sinking ship UNFAITHFULused to describe people who leave a company, organization etc when it is in trouble (就像)老鼠逃离沉船一样〔形容人们在公司、组织等有麻烦时纷纷离去〕
rat race, rats, → smell a rat at smell2(7)
Examples from the Corpus
rat2 verb (ratted, ratting) [intransitiveI] informal  
1 UNFAITHFULif someone rats on you, they tell someone in authority about something wrong that you have done 告发,告密 SYN grass
rat on
 They’ll kill you if they find out you’ve ratted on them!
假如他们发现是你告发了他们,会杀掉你的!
2 British EnglishBrE to not do what you had promised to do 食言,背信弃义 SYN go back on, renege on
rat on
 He accused the government of ratting on its promises to the disabled.
他指责政府没有履行对残疾人所作的承诺。
3rat somebody ↔ out American EnglishAmE informal if someone rats you out, they are disloyal to you, especially by telling someone in authority about something wrong that you have done 出卖;〔尤指〕告发
 You can’t rat out your teammates.
你不能告发队友。
Examples from the Corpus
Examples from the Corpus
Origin rat1
Old English ræt
rat1 nounrat2 verb
Chinese
Corpus

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