你必须系上安全带:翻译结果:You must fasten your seat belt重点词语解释:系 :system; series安全带 :safety belt; securing strip相关词组:法规要求系安全带 : the law requires you wear a seatbelt; this vehicle stops frequently浓时别忘先系安全带 :no excuse双语例句:Pretend like you gonna help her with her seat belt 你假装要帮她系安全带Everyone is supposed to wear a seat - belt in the car每个人在汽车里都应该系安全带。