let off

柯林斯词典

1. PHRASAL VERB If someone in authority lets you off a task or duty, they give you permission not to do it. 免除 (任务或义务)
I realized that having a new baby lets you off going to boring dinner parties. 我意识到，生了个孩子你就可以不参加无聊的宴会了。
2. PHRASAL VERB If you let someone off, you give them a lighter punishment than they expect or no punishment at all. 宽恕
Because he was a Christian, the judge let him off. 因为他是一个基督徒，法官宽恕了他。
3. PHRASAL VERB If you let off an explosive or a gun, you explode or fire it. 放 (枪炮等); 使爆炸
A resident of his neighbourhood had let off fireworks to celebrate the revolution. 他邻里的一个居民燃放了烟花来庆祝革命。