seat belt

名词 seat belt:

1. a safety belt used in a car or plane to hold you in your seat in case of an accident
   同义词：seatbelt

1. It's silly to drive without fastening one's seat belt.
   不系保险带开车就太傻了。
2. The plane's take off. Please fasten your seat belt.
   飞机起飞了。请系好安全带。
3. Now you can unfasten your seat belt.
   现在您可以解开安全带了。
4. Fasten your seat belt.
   系好你的安全带。