If you really have the main umbrella, we need to cut off the main umbrella, open the parachute.

如果真的遇到主伞问题，我们需要切掉主伞，打开备份伞。

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Our entire parachute system includes a main umbrella, a backup parachute and an automatic umbrella.

我们的整套跳伞系统里面，包含一个主伞一个备份伞和一个自动开伞器。

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The main umbrella has trap door on the top, the secondary umbrella covers the trap door, and the spring presses the secondary umbrella.

主伞的顶部开有“天窗”，“天窗”的上端罩有副伞，副伞的上端压有弹簧。

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NPR: Qatar Faces Backlash Among Rebel Groups In Syria

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