出门时请随手关灯。

Turn the light off as you go out.; Please switch off the lights when you leave.

随手关门!

закрывайте дверь!

出门时随手关灯！

Выключайте за собой свет!

他随手轻轻地把门关上了。

He closed the door softly behind him.

出去时请顺手关门。

Would you close the door when you go out?