a rat
I saw a rat in the kitchen.
我在厨房看到一只老鼠。
老鼠；耗子
rats — plural of rat
卑鄙的人；小人；工贼；破坏罢工者；发垫；垫发卷；通常有短肢、尖鼻、长无毛尾巴,体长超过约12厘米或5英寸的啮齿动物家族的众多成员之一；各种长尾啮齿动物,类似但比老鼠大
A rat, a rodent resembling a mouse but larger, with a long, bare tail.
英语中rat通常比mouse大；汉语口语中常不区分。
通常有短肢、尖鼻、长无毛尾巴,体长超过约12厘米或5英寸的啮齿动物家族的众多成员之一
Any of the numerous members of several rodent families that usually have short limbs, a pointy snout, a long, hairless tail, and a body length greater than about 12 cm, or 5 inches.
各种长尾啮齿动物,类似但比老鼠大
any of various long-tailed rodents similar to but larger than a mouse
属于鼠属的中型啮齿动物
A medium-sized rodent belonging to the genus Rattus.
在罢工期间工作(或提供工人)的人
someone who works (or provides workers) during a strike
用作发型的一部分的脱落头发团
A wad of shed hair used as part of a hairstyle.
被认为可鄙或令人蔑视的人
a person who is deemed to be despicable or contemptible
用于撑起头发的材料卷
A roll of material used to puff out the hair, which is turned over it.
The rat scurried across the kitchen floor.
老鼠在厨房地板上急忙跑过。
用法提示：在这句话中，'rat' 是指一种小型啮齿动物。
AI contextual example
She set a trap to catch the rat in the attic.
她在阁楼里设置了一个捕鼠器来抓老鼠。
用法提示：在这句话中，'rat' 是指一种需要捕捉的啮齿动物。
AI contextual example
The scientist studied the behavior of the rat in the lab.
科学家在实验室里研究老鼠的行为。
用法提示：在这句话中，'rat' 是指实验中研究的啮齿动物。
AI contextual example
I saw a rat in the kitchen.
我在厨房看到一只老鼠。
用于比喻胆小或偷偷摸摸的行为。
He ran away like a rat.
他像老鼠一样逃走了。
There is a rat in the basement.
地下室有一只老鼠。
语气较'rat'正式，通常指政治或重大背叛
中性词，指提供信息的人，常用于法律或警方语境
俚语，贬义，指警方安插的卧底或告密者
非正式用语，贬义较强，常用于朋友或同伙之间
grammar · medium
易错句子I saw rat in the street.
正确表达I saw a rat in the street.
中文中没有冠词，学习者常遗漏单数可数名词前的 'a'。加上 'a' 表示单数泛指，符合英语语法。
grammar · medium
易错句子There are many rat in the city.
正确表达There are many rats in the city.
英语可数名词复数需加 -s，中文没有复数变形，学习者常漏掉。此处 'rats' 是复数形式，表示多只老鼠。
针对“rat”作为告密者或卑鄙之人的反义词，意为勇敢或值得敬佩的人。
针对“rat”作为背叛者的反义词，意为保持忠诚的人。
针对“rat”作为背信弃义者的反义词，意为结盟支持者。
激烈竞争
He was tired of the rat race and moved to the countryside.
他厌倦了激烈的竞争，搬到了乡下。
实验鼠；实验对象
The students used lab rats to test the drug.
学生们用实验鼠来测试这种药物。
囤积狂；林鼠
My uncle is a pack rat; he never throws anything away.
我叔叔是个囤积狂，他从不肯扔掉任何东西。
鼠药
They placed rat poison in the attic to get rid of the rodents.
他们在阁楼上放了鼠药来消灭啮齿动物。
捕鼠器
The old house had a rat trap in every corner.
那栋老房子每个角落都有捕鼠器。
鼠尾辫；鼠尾
In the 80s, some people wore a rat tail hairstyle.
在80年代，有些人留鼠尾辫发型。
感到可疑
When he offered me a deal too good to be true, I smelled a rat.
当他给我一个好得令人难以置信的交易时，我感到可疑。
激烈竞争
She quit her job to escape the rat race and start a simpler life.
她辞去了工作，逃离激烈的竞争，开始了更简单的生活。
告密
He ratted out his colleagues to save himself from punishment.
他告发了同事，以使自己免受惩罚。
你这肮脏的老鼠！
A classic movie line from 1930s gangster films, often attributed to James Cagney. It is used to accuse someone of betrayal or being an informant, reflecting the sense of 'rat' as a traitor.
这句经典台词出自1930年代的黑帮电影，常归功于詹姆斯·卡格尼。用于指责某人背叛或告密，对应了“rat”作为叛徒的含义。
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY, WORDNET.