名詞 safety belt:

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

1. The new law about safety belts in cars will be difficult to enforce.
   規(guī)定系汽車安全帶的新法規(guī)將難以實施。
2. Thanks to I had tied then the safety belt.
   幸虧我當時系上了安全帶。
3. She refused to sit in the car till her husband promised to wear his safety belt.
   她拒絕上車，除非她丈夫答應系好安全帶。