What must you keep fastened when you ride in a car？
When you fasten something, you close it by means of buttons or a strap, or some other device. If something fastens with buttons or straps, you can close it in this way. 扣紧; 系牢
Important seat belts
Safety devices are very important in our everyday life. Many accidents happen every single day and proper use of safety restraints have saved many lives. It is important to recognize the importance of wearing one. But also the importance of the proper use of seat belts.
Seat belts are known to offer the best defense against the following: