strap in

例句：

1. 1.Before take off, please strap in your seatbelt.
   起飞前请系好你的安全带。
2. 2. The pilot strapped in his seatbelt and started the engine.
   飞行员系好了他的安全带，开始发动引擎。
3. 3.After the plane landed safely, passengers were encouraged to strap in for the descent.
   飞机安全着陆后，乘客被鼓励系好安全带以准备下降。