士兵使用降落伞从直升机上安全降落。

The soldier used a ___parachute to descend safely from the helicopter.

在紧急情况下，飞行员被训练弹射并打开他们的降落伞。

In an emergency, pilots are trained to eject and open their ___parachute.

货物用一个大降落伞空投，以防止撞击损坏。

The cargo was dropped with a large ___parachute to prevent damage upon impact.