let out let off give off give out的区别 详细解答下

let out
放出, 泄露；放掉, 放大
例句:
They let out horses by the day.
他们按天计算出租马匹.
Each time she moved her leg, she let out a moan.
每次她动一下腿,就发出一声呻吟.
When the land was seen, the sailor let out a whoop of joy.
当看见陆地时,那水手发出一声欢呼.

Let off 表示“宽恕”“使爆炸”“使爆发”或“允许下车”如：
The police let him off.
警察宽恕了他.
To let off a firework
放鞭炮
Let off the anger
发泄怒气

Give off
表示“发出”,“长出”如：
Give off steam
放出蒸汽


Give out
表示“分发”“用完”如：
Give out the examination papers
把考卷发下去
His strength gave out.
他筋疲力尽.