it is dangerous to lean out of the window while the bus is in motion.
行车时探身窗外是危险的。
going round a tight corner, he notices a woman driver who is coming in the opposite direction begin to lean out of her window.
走到一个急转弯处,他注意到对面一个女司机正在开始探身出她的车窗。
it's dangerous and unlawful for passengers to lean out of the windows of railway carriages.
乘客在火车车厢探身窗外既危险又违法。
it is dangerous to lean out of the window.
探身窗外是危险的。
you must not allow passengers to hold the steering wheel or to lean out of a window.
切勿让乘客握持驾驶盘,或把身体伸出车窗外。