2,dog-eared books
读得卷了边的书
3，dog sleep
不时惊醒的睡眠
4，dog watch
夜班
5，old dog
上岁数的人，老手
6，You're a luck dog!
你真是个幸运儿！
7，as faithful as a dog
象狗一般忠诚
8，work like a dog
指一个人努力卖命地工作
9，They say that to be successful, a person has to work like a dog.
他们说，一个人想要成功就得拼命工作。
10，dog eat dog
残酷，竞争激烈
Some people say we live in a dog-eat-dog world！
有人说，我们生活在一个竞争激烈的世界！
11，sick as a dog
病得严重
The situation would be even worse if she become sick as a dog.
如果他病得厉害，情况会更糟。
12，the dog days of summer
一年中最热的三伏天
I can do nothing except for summer in the dog days of summer.
在三伏天出来游泳，我什么事也做不成。
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