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N-COUNT
狗;犬
A dog is a very common four-legged animal that is often kept by people as a pet or to guard or hunt. There are many different breeds of dog.
例句
Outside, a dog was barking...
外面，一只狗在叫。
The dog growled again...
狗又在狂吠。
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N-COUNT
公狗;犬科雄獸(雄狐、雄狼等)
You use dog to refer to a male dog, or to the male of some related species such as wolves or foxes.
例句
Is this a dog or a bitch?
這是公狗還是母狗?
...a dog fox.
公狐貍
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N-COUNT
卑鄙小人;無賴
If someone calls a man a dog, they strongly disapprove of him.
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N-COUNT
蹩腳貨;粗制濫造的東西
People use dog to refer to something that they consider unsatisfactory or of poor quality.
例句
It's a real dog.
這實在是蹩腳貨。
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N-COUNT
丑女人
If someone, especially a man, calls a woman or girl a dog, they mean that she is very ugly, unattractive, or boring.
例句
How can you go out with her? She's a real dog.
你怎么能和她談戀愛呢？她簡直就是個恐龍。
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VERB
困擾;折磨;糾纏
If problems or injuries dog you, they are with you all the time.
例句
The problems that have dogged him all year are just a temporary setback...
一時的挫折竟困擾了他一整年。
His career has been dogged by bad luck.
他在事業上一直不走運。
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N-PLURAL
（帶有賭博性質的）賽狗會，跑狗
The dogs is a sports meeting where dogs, especially greyhounds, race and people bet on which dog will win.
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PHRASE
亂七八糟;一團糟
You describe something as a dog's breakfast or dog's dinner in order to express your disapproval of it, for example because it is very untidy, badly organized, or badly done.
例句
The whole place was a bit of a dog's dinner, really...
整個地方烏煙瘴氣的，真的。
Our own Board are going to make a dog's breakfast out of it if we aren't careful.
如果我們不小心行事，我們的董事會就會亂成一團。
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PHRASE
狗咬狗;殘酷無情的競爭;自相殘殺
You use dog eat dog to express your disapproval of a situation where everyone wants to succeed and is willing to harm other people in order to do so.
例句
It is very much dog eat dog out there...
那兒的競爭異常殘酷。
The TV business today is a dog-eat-dog business.
當前電視業的競爭殘酷無情。
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PHRASE
敗落;大不如前
If you say that something is going to the dogs, you mean that it is becoming weaker and worse in quality.
例句
They sit in impotent opposition while the country goes to the dogs.
國家敗落之際，他們加入了軟弱無力的反對黨。
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PHRASE
別惹麻煩;別多事
If someone tells you to let sleeping dogs lie, they are warning you not to disturb or interfere with a situation, because you are likely to cause trouble and problems.
例句
Why can't she let sleeping dogs lie?
為什么她就不能不多事？
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PHRASE
不接受新事物;不喜歡新玩意兒
If you say 'You can't teach an old dog new tricks', you are suggesting that someone is unwilling to try new ways of doing things.