Cách sử dụng
The expression "let off" means to release or excuse someone from punishment, blame or responsibility. For example, if you have a teacher who is usually very strict, but she lets you off for not completing your homework, she has decided not to punish you for it. Another example is when a boss lets off an employee for being late for work because of traffic. The expression can also refer to releasing a substance or a sound, like a balloon being let off, or a gun being let off.