blow up

炸毁什么东西, 一个人发脾气或发火, 给气球吹气, 放大照片

Example：The retreating German army tried to blow up all the bridges on the Rhine River to stop the Allied troops from crossing into Germany.
正在撤退的德国军队设法炸毁莱茵河上所有的桥梁来阻挡联军越过莱茵河进入德国。

另外blow up也可以指一个人发脾气或发火。我们来举一个例子：

Example I really blew up when I learned that my girlfriend was going out with another man.
当我知道我的女朋友还跟另外一个男朋友出去玩的时候，我可真火了。

Blow up有的时候还可以解释成给气球吹气，给排球和汽车轮胎打气。比如一个人说：

Example: John have to stop at the gas station to blow up his front tires

John得到加油站去给汽车的前轮打气。

Example: I \'d like 8 by 10 blow ups of these negatives, please.
请你把这些底片放大成8X10那么大的照片。
 

blow out

汽车轮胎炸了， 把火灭掉， 电灯的保险丝断了，Blow out也可以指那种规模很大，排场很讲究的聚会。

Example: John\'s car smashed into a tree when he had a blow-out.
当John的轮胎炸了的时候，他的车就撞到一棵树上去了。

Example: You\'d better blow out that candle before it sets fire to the tablecloth.
你最好还是把那蜡烛灭了吧，否则台布都要烧着了。

Example: All the lights went off in the building and the elevators stopped when the master fuse blew out.
大楼的总保险丝一断，楼里所有的灯都灭了，电梯也停了。

Example: When the John celebrated their 25th anniversary, they invited all their friends to a big blow-out at the best hotel in town.
当John夫妇庆祝他们结婚二十五周年的时候，他们在当地最高级的旅馆里举行了一个规模盛大的聚会,把所有的朋友都请去了。”

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