是什么原因导致猎鹰数量下降如此之快？

What was causing the number of falcons to drop so quickly?

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穆斯克解释说， 起落架升级的猎鹰9号并不仅仅是第一级着陆，它也起到稳定阶段后下降鳍很像飞机上做。

Musk explained that the landing gear on theupgraded Falcon 9 does more than just land the first stage, it also acts tostabilize the stage upon descent much like fins do on an aircraft.

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