let off

英 [let ɒf]

美 [let ɔːf]

准许…不必做（或不必工作）; 对…宽大处理; 使（炸药等）爆炸; 开（枪、炮等）

柯林斯词典

PHRASAL VERB 准许…不必做（或不必工作）
If someone in authorityletsyouoffa task or duty, they give you permission not to do it.
1. The theatre management kindly let me off a couple of performances to go to Yorkshire...
  剧院领导很体谅地同意我休演几场抽身到约克郡去。
2. In those days they didn't let you off work to go home very often.
  在当时，他们并不经常准许请假回家。
PHRASAL VERB 对…宽大处理
If youletsomeoneoff, you give them a lighter punishment than they expect or no punishment at all.
1. Because he was a Christian, the judge let him off...
  由于他是基督徒，法官便对他从轻发落。
2. When police realised who he was, they asked for an autograph and let him off with a warning.
  警察知道他是谁后，便向他要了签名，然后只给了他个警告就放他走了。
PHRASAL VERB 使（炸药等）爆炸；开（枪、炮等）
If youlet offan explosive or a gun, you explode or fire it.
1. A resident of his neighbourhood had let off fireworks to celebrate the Revolution.
  他家附近的一个居民燃放了烟花庆祝革命胜利。

verb

grant exemption or release to
1. Please excuse me from this class
Synonym:excuserelieveexempt

When police realised who he was, they asked for an autograph and let him off with a warning.
警察知道他是谁后，便向他要了签名，然后只给了他个警告就放他走了。
Willie accidentally let off his father's shotgun and made a hole In the wall.
威利偶然把他父亲的手枪弄走了火，在墙上打了个洞。
We have been let off our homework because of the concert.
因为有音乐会所以免了我们的家庭作业。
The terrorists let off a bomb near the building.
恐怖分子在这座楼房附近引爆了一枚炸弹。
Because he was a Christian, the judge let him off
由于他是基督徒，法官便对他从轻发落。
Well, I must say television's just a passive way of let off steam.
噢，我得说电视只是消耗精力的一种消极方式。
This train stops to let off passengers on signal.
这列火车按信号停车让旅客下车。
Recently we have had a heated discussion on whether we can let off fireworks on Spring Festival or not.
最近我们就是否可以在春节期间燃放烟花爆竹举行了讨论。
He was let off without punishment; we won't let him off so easily next time.
他没受处分就过去了，下次我们不能这样轻易放过他。
He believes that if he works all day he should be let off domestic chores.
他认为如果他整天工作，就应免掉他的家务劳动。