系紧安全带

例句：

1. 1. Please fasten your seat belt before takeoff.
   起飞前请系好安全带。
2. 2. The driver had to secure the child in his car seat.
   司机不得不把孩子安全地绑在汽车座椅上。
3. 3. It's important to always ensure that everyone is secured and safe during a flight.
   在飞行过程中确保每个人都安全是非常重要的。