Can you work the screw loose?

你能使这个螺钉松开吗？

He has a screw loose somewhere.

他有一个螺丝钉不知道丢那里了。

Vibration has worked the screw loose.

振动使这个螺丝松了。

Use electric wrench will tire screw loose, remove one tire.

用电动扳手将轮胎螺丝一一松脱，拆卸轮胎。

Jason has had a screw loose ever since his girlfriend left him.

杰森在女朋友离开他后有些失魂落魄。