扣安全带的英文

buckle up

• 扣:    button up; buckle
• 安全带:    safety belt; secur ...
• 坐妥后请扣安全带等:    fasten seat belt w ...

例句与用法

1. Especially that part where they teach us how to use the seat belts
   特别是他们教我们怎样扣安全带的部分