buckle folding machine

例句：

1. 1.He buckled his seatbeltbefore taking off.
   他起飞前系好了安全带。
2. 2. The car's doorbuckled when it hit a pothole.
   汽车在碰到一个坑时车门变形了。
3. 3. She buckled up her seatbelt and settled in for the flight.
   她系好安全带，准备登机。