Don't lean out of the window!

不要把身体探出窗外！

To lean out of the window is dangerous.

把身子伸出窗外是危险的。

You mustn't lean out of the window while the car's moving.

车子前进的时候，你不能把身体探出窗外。

If the room fills with smoke, lean out of the window unless prevented by smoke and flame coming from a room below or nearby.

如果房间充满烟幕，而且傍边或下面的房间的没有火或烟幕，探诞生体到窗外。