safety belt

名词 safety belt:

1. belt attaching you to some object as a restraint in order to prevent you from getting hurt
   同义词：life belt, safety harness

1. The new law about safety belts in cars will be difficult to enforce.
   规定系汽车安全带的新法规将难以实施。
2. Thanks to I had tied then the safety belt.
   幸亏我当时系上了安全带。
3. She refused to sit in the car till her husband promised to wear his safety belt.
   她拒绝上车，除非她丈夫答应系好安全带。