That distance is a common international definition for the beginning of space, also known as the " Karman line" .

这个距离是太空起点的国际通用定义，也被称为" 卡门线。"

Let's go waaay up to the Karman line, where space technically begins, 100km above Earth's surface.

让我们一直走到卡门线， 从技术上讲， 太空从这里开始， 距离地球表面 100 公里。