怎样区别set off,set out

怎样区别set off,set out

题目
怎样区别set off,set out
答案
a) set off 动身,出发,燃放(鞭炮等),使……爆炸(发出响声),引起(做某事)
We set off at dawn.
She usually sets off for school at 6:30.
“Stop thief!” cried John and set off after him.
People still set off fireworks in the countryside in Spring Festival.
If the TNT is shaken or roughly handed,it will be set off.
I accidentally pressed the button and set off the alarm clock.
This question set off a discussion.
b) set out 动身,启程,出发,开始,着手,准备(做某事)
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