reserve parachute

例句：

1. 1. They reserved a space on the plane for their family.
   他们为家人预留了飞机上的一个座位。
2. 2.The pilot had to reserve the landing strip for emergency landings.
   飞行员不得不为紧急着陆预留跑道。
3. 3. She reserved her seat in the front row for her favorite band.
   她为最喜欢的乐队预留了前排的座位。