let off
放（炮、烟火等）, 免罚, 宽恕
例句与用法：
The janitor let off some steam because the pressure was too high.
由于压力过高，火炉工放掉了一些蒸气。
The boys were letting off fireworks.
男孩子在放烟火。
We've been let off school today because our teacher is ill.
今天学校放假，因为我们的老师病了。
She was let off with a fine instead of being sent to prison.
没让她入狱，而是罚款了事。
宽恕
I'll let you off this time, but never again.
这次我宽恕你, 但以后不再宽恕了。
let offlet off1.■让…下车〔下船〕This train stops to let off passengers on signal.这列火车按信号停车让旅客下车。2.■引发, 引爆They let off their guns at the British ships.他们对英国船舶开炮。3.■放掉〔过〕; 免除We won't let you off so easily next time.我们下次绝不会这样轻易地饶恕你。The engine is letting off steam to relieve the pressure in the boiler.机车在放蒸汽, 以减少锅炉的气压。Would you let me off the bus at the next stop, please?请让我在下一站下车好吗?She let the boy off playing piano.她没有强迫孩子练习弹钢琴。
let off1.■让…下车；允许…下船(或下岸)：The school bus stopped at the gate and let the pupils off.校车停在大门口，让学生们下车。2.■原谅；释放；饶恕；从轻发落：The teacher let that careless student off and didn't fail him.老师放过了那个粗心的学生，没给他打不及格。3.■放(炮、烟火等)：The teacher forbad the pupils to let off fireworks in the school.老师禁止学生在学校放烟火。4.■允许不做某事，准许不工作，准许离去(如下班、放学等)；免除(责任、任务等)；放假：The factory manager let the workers off for a week.厂长给工人们放了一周的假。I'll let her off the housework this weekend.这个周末我免了她的家务活。5.■(房屋)分层出租，分套出租；准许部分租用房屋：These buildings are being let off as flats.这些楼房是分套出租的。6.■漏出，渗出(水、气体等)：We should let the steam off the boiler.我们应该放掉锅炉里的蒸气。7.■讲(笑话)，说(俏皮话等)：The speaker started his speech by letting off a joke.演讲人在演说时先讲了一个笑话。8.■发泄，吐露9.■[口语]放屁