Drivers and passengers in the car must wear a seat belt, airbag is a passive safety device, only with the use of seat belts, in order to have a real security effect.
驾驶员和乘员在汽车运行时必须系好安全带，安全气囊属于被动安全装置，只有和安全带配合使用，才能有真正的安全保护效果。
Passive safety system protects the passengers in case of an accident such as airbag and seat-belt tightener. Active safety systems help prevent accidents such as ABS and TCS.
被动安全系统在事故是保护乘客，如一个胶皮安全气囊和安全带。主动安全系统帮助预防事故，如abs和TCS。
Suddenly I see: I pay to stay in an inescapable jail. My seat is a single cell. The safety belt is a waist cuff. As to air hostesses, they are beautiful jail guards.
终于顿悟：自己花钱进了个无处可逃的监狱，我的座位就是单人牢房，安全带就是“腰铐”，至于空中小姐们当然就是些美丽的看守了。
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