不轨

The boy’s misconduct cost his mother many sleepless nights.

这男孩的不,使的母亲许多夜不得安眠。

His bad behaviour has tarnished the good name of the school.

不, 败坏了学校的誉。

Don't harbor unkind thoughts.

不要心不。

Their talk was slightly malicious.

们的谈话有点儿心不。