set off基本解释
出发，动身；解脱；装饰；抵消；使爆炸，点燃；引起
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verb
1. cause to burst with a violent release of energy
e.g. We exploded the nuclear bomb
Synonym: explodedetonateblow up
2. set in motion or cause to begin
e.g. The guide set the tour off to a good start
3. direct attention to, as if by means of contrast
e.g. This dress accentuates your nice figure!
I set off these words by brackets
Synonym: bring out
4. provoke or stir up
e.g. incite a riot
set off great unrest among the people
Synonym: inciteinstigatestir up
5. put in motion or move to act
e.g. trigger a reaction
actuate the circuits
Synonym: tripactuatetriggeractivatespark offsparktrigger offtouch off
6. leave
e.g. The family took off for Florida
Synonym: departpartstartstart outset forthset outtake off
7. make up for
e.g. His skills offset his opponent's superior strength
Synonym: canceloffset
1. 动身;出发;启程
When you set off, you start a journey.
e.g. Nichols set off for his remote farmhouse in Connecticut...
尼科尔斯动身去他在康涅狄格州的偏僻农舍了。
e.g. The President's envoy set off on another diplomatic trip...
总统的使节开始了又一次外交之旅。
2. 引爆(炸弹);触发，拉响(警报等)
If something sets off something such as an alarm or a bomb, it makes it start working so that, for example, the alarm rings or the bomb explodes.
set off
e.g. Any escape, once it's detected, sets off the alarm...
一旦发现有泄漏，警报就会响起来。
e.g. Someone set off a fire extinguisher...
有人打开了灭火器。
3. 引发;触发;激起
If something sets off an event or a series of events, it causes it to start happening.
e.g. The arrival of the charity van set off a minor riot as villagers scrambled for a share of the aid...
救济物资车的到来引发了小小的骚乱,村民们争先恐后地想抢到一份援助物资。
e.g. If he attended a party without his wife, it set off a storm of speculation.
如果他没和妻子一块儿出席宴会，便会招致各种猜测满天飞。
4. 使发怒;使回忆起来;使侃侃而谈
If something sets a person off, it makes them angry, or makes them remember something and they start talking a lot.
e.g. The smallest thing sets him off, and he can't stop talking about his childhood.
一件微不足道的小事都能打开他的话匣子，他会滔滔不绝地讲述他的童年。
5. 衬托;(通常指通过对比)使显得更漂亮
If one colour, flavour, or object sets off another, it makes it look more attractive, often by providing a contrast.
e.g. Blue suits you, sets off the colour of your hair.
蓝色很适合你，能衬托出你的发色。
e.g. ...perfectly proportioned galleries that set off the contents to their best advantage.
结构匀称完美、能最有效地凸显其展品的展览馆
1. 隔开：后一部分的所有代码被一个if语句隔开(set off) 了,这个if语句检查__name__这个东西是不是等于__main__. 再说一次,双下划线意味着特殊的名字. 使用if的原因是因为每一个文件都有可能在另外的程序里被用作库模块(马上就会讲到模块).
2. 出发：ring off挂断电话 | set off出发 | see off送行
3.
3. 引起：5. show up露面;出席 | 6. set off引起 | 8. a piece of一片;一块;一张
4. 激起：a costume party一个服装聚会 | set off 激起 | get married 结婚
You should have seen Macy cry when Ed was about to set off on the first day, though.
不过, 你应该看到艾德第一天就要出发时, 梅西哭泣的模样。
2018全国卷2
It set off the Montgomery bus boycott.
这引发了蒙哥马利公交车的抵制活动。
2016全国卷1
