translation.en: EM: That's right. So it's important that the rocket stages be able to come back, to be able to return to the launch site and be ready to launch again within a matter of hours.
translation.zh: 埃隆·马斯克：对。所以能让火箭的底座 回到陆地上， 能够回到发射基地然后准备在几个小时内做好下一次发射的准备，这是很重要的。