come off,come out,come round,come through 区别

come off
离开,举行,实现,成为
come out
成为众所周知,发行或发表,正式的社交,结束,结果,自己公开宣布
come round
来,前来,过访,绕道而来,苏醒,转变,改变主意,笼络
come through
经历,脱险,传出,捐助