保证所有的发动机清理完毕，气瓶充气。

Ensure that engines are purged and air bottles bled.

youdao

消防车可以装载额外的气瓶或者充气设备，而消防员在着火建筑内停留时间也有限。

The fire engine can carry extra tanks or refilling equipment, and a firefighter spends a limited time in the burning building.

youdao

气瓶必须用专用设备再次充气。

The tanks have to be refilled using special equipment.

youdao