rat

noun

1. 老鼠；耗子
   a small animal with a long tail, that looks like a large mouse, usually considered a pest (= an animal which is disliked because it destroys food or spreads disease)
   1. rat poison
      老鼠药
2. 讨厌的人；卑鄙的小人；骗子
   an unpleasant person, especially one who is not loyal or who tricks sb

verb

verb

1. N-COUNT 老鼠;耗子
   A rat is an animal which has a long tail and looks like a large mouse.
   1. This was demonstrated in a laboratory experiment with rats.
      在实验室用老鼠进行的实验证明了这一点。
   2. ...a rat-infested derelict building.
      鼠灾泛滥的废弃建筑
2. N-COUNT 卑劣的人；不忠实的人；小人
   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.
   1. What did you do with the gun you took from that little rat Turner?
      你是怎么处理从那个叫特纳的小叛徒手里得到的枪的？
3. VERB 告密;出卖
   If someone rats on you, they tell someone in authority about things that you have done, especially bad things.
   1. They were accused of encouraging children to rat on their parents.
      他们被指控唆使儿童告发自己的父母。
4. VERB 违约；食言
   If someone rats on an agreement, they do not do what they said they would do.
   1. She claims he ratted on their divorce settlement.
      她声称他违反了他们的离婚协议。
5. PHRASE 怀疑有问题；发现不对头；有所警觉
   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.
   1. If I don't send a picture, he will smell a rat...
      如果我不寄出照片，他将有所察觉。
   2. Though Lloyd George's behaviour seemed curious, Haig still did not smell a rat.
      尽管劳埃德·乔治的行为古怪，黑格仍然没有任何怀疑。

1. This was demonstrated in a laboratory experiment with rats.
   在实验室用老鼠进行的实验证明了这一点。
2. What did you do with the gun you took from that little rat Turner?
   你是怎么处理从那个叫特纳的小叛徒手里得到的枪的？
3. They were accused of encouraging children to rat on their parents.
   他们被指控唆使儿童告发自己的父母。
4. She claims he ratted on their divorce settlement.
   她声称他违反了他们的离婚协议。
5. If I don't send a picture, he will smell a rat
   如果我不寄出照片，他将有所察觉。
6. Though Lloyd George's behaviour seemed curious, Haig still did not smell a rat.
   尽管劳埃德·乔治的行为古怪，黑格仍然没有任何怀疑。
7. I had to get out of the rat race and take a look at the real world again.
   我得从疯狂的竞争中解脱出来，重新审视真实的世界。
8. The brown rat has prominent ears and a long scaly tail.
   那只棕鼠两只耳朵向前支着，一条长尾巴布满鳞片。
9. A rat can gnaw a hole through wood.
   老鼠能啃穿木头。
10. He was wet all over like a drowned rat.
    他浑身湿得像只落汤鸡。
11. The two brothers stood over the dead rat and spoke in tones of awed admiration.
    弟兄俩站在死鼠跟前，用又是吃惊又是赞叹的口气谈论着。
12. A rat has gnawed a hole in the box.
    老鼠把箱子嗑破了。
13. Zimbabwe is better than saddam's rat hole or gbagbo's bunker& and the best option he can salvage now.
    津巴布韦总要比萨达姆的老鼠洞或巴博的暗堡强，这也是他现在能幸免的最好方案了。
14. He was born in the year of the rat ( i.e.1924, 1936, 1948, 1960, 1972, 1984, 1996, or2008).
    他生肖属鼠。
15. Captain hardnose certainly ran that rat over the hill.
    哈得诺思上尉当然要求那个告密者离职了。
16. The dog nosed a rat out.
    那条狗嗅出一只老鼠的气味。
17. The cat chewed up the rat.
    猫细嚼一只老鼠。
18. The cat caught a rat.
    猫捉到一只老鼠。
19. But you promised to help us, you rat!
    可是你答应过要帮我的忙，你这言而无信的小人！
20. I got angry with this rat.
    我生了这只老鼠的气。
21. He used a special apparatus which had a cage for the rat and three doors.
    他用了一种特殊装置，这种装置上有个鼠笼和三扇门。
22. AIM: To study the apoptosis induced by thapsigargin on rat cortical neurons and the intervention of Danhong injection.
    目的：探讨毒胡萝卜素诱导大鼠皮层神经元内质网应激凋亡的机制及丹红注射液的干预作用。
23. We therefore investigated the cellular and molecular mechanisms of a synthetic rCGRP on rat isolated atria and arteries.
    因此，我们研究了合成的大鼠CGRP对大鼠离体心房和离体动脉的细胞和分子作用机制。
24. Rameses: You have a rat's ears and a ferret's nose.
    拉美西斯：你有老鼠的耳朵和雪貂的鼻子。
25. Objective To investigate toxicity and teratogenic effect of Microula seed oil on embryo of rat.
    目的探讨微孔草子油对大鼠胚胎毒性和致畸作用。
26. Methods After injected Yinghuang freeze-dried powder injection nerve system and general behavior of rat or mouse were observed.
    方法银黄冻干粉针注射给药，观察给药后对小鼠和大鼠中枢神经系统的影响和一般行为表现。
27. I smell a rat.
    我闻到老鼠。
28. Objective To study the effect of acrylamide on proliferation and differentiation of rat kidney epithelial cells.
    目的研究丙烯酰胺对新生大鼠肾上皮细胞增殖分化的影响。
29. Objective To investigate the effect of oxyhaemoglobin on proliferation and apoptosis of cultured rat brain microvascular endothelial cells.
    目的探讨氧合血红蛋白对体外培养的大鼠脑微血管内皮细胞增殖和凋亡的影响。
30. Aim: To investigate the effects of intermittent hypoxia on the hippocampal synaptic plasticity in rat.
    目的：研究间歇性低氧对大鼠海马神经元突触可塑性的影响。

  betray cheat on grass on rat【导航词义：背叛】

  betray v. 背叛；出卖；泄露

〔辨析〕主要指不忠于誓约或辜负信任；也可以指有意泄露秘密或出于无意暴露隐蔽的事物。

  cheat on phr. v. 对…不忠

〔辨析〕尤指对配偶或性伴侣不忠。

  grass on phr. v. 〈英，非正式〉告密，告发

〔辨析〕主要指向警方告发某人的违法活动。

  rat v. 〈非正式〉告发，告密； 〈英〉背信弃义

〔辨析〕主要指向掌权者告发某人，也指违背所作的承诺，常后接介词 on。

rat on sb

1. 泄露秘密；告密
   to tell sb in authority about sth wrong that sb else has done
   1. rat poison
      老鼠药

rat on sth

1. 背弃做某事的诺言
   to not do sth that you have agreed or promised to do

n.

(like rats) deserting/leaving a sinking ship

• （比喻只顾自己而离开处于困境中的机构等）（像）逃离沉船（的老鼠）
  used to talk about people who leave an organization, a company, etc. that is having difficulties, without caring about the people who are left

smell a rat

• 怀疑事情不妙；感觉情况不对
  to suspect that sth is wrong about a situation

noun

1. any of various long-tailed rodents similar to but larger than a mouse

2. a pad (usually made of hair) worn as part of a woman's coiffure

3. one who reveals confidential information in return for money

   Synonym:    informerbetrayersquealerblabber

4. a person who is deemed to be despicable or contemptible
   1. only a rotter would do that
   2. kill the rat
   3. throw the bum out
   4. you cowardly little pukes!
   5. the British call a contemptible person a `git'

   Synonym:    rotterdirty dogskunkstinkerstinkpotbumpukecrumblowlifescum bagso-and-sogit

5. someone who works (or provides workers) during a strike

   Synonym:    scabstrikebreakerblackleg

verb

1. give away information about somebody
   1. He told on his classmate who had cheated on the exam

   Synonym:    denouncetell onbetraygive awaygrassshitshopsnitchstag

2. catch rats, especially with dogs

3. give (hair) the appearance of being fuller by using a rat

4. take the place of work of someone on strike

   Synonym:    finkscabblackleg

5. employ scabs or strike breakers in

6. desert one's party or group of friends, for example, for one's personal advantage