Launched in 2005, the cable car system has two cabins that can carry up to  eight passengers each and move on a single line.

该缆系统于2005年投入使用，配备两节，每节多可容纳八名乘客，并单一轨道运行。

And since all of those celestial objects moved in a circle, it was thought that circular motion was the natural motion of the heavens.

由于所有天体都圆形轨道运行，人们认为圆周运动是天体的自然运动方。

Space is filled with an unimaginably large number of things; things that benefit us, like sunshine from the sun, and gravity, which keeps us in orbit and basically prevents us from flying into the abyss.

太空中充斥着大量不可思议的事物，有对我们有益的事物，比如来自太阳的阳光，还有保证我们轨道运行的引力，它主要的是防止我们坠向宇宙深渊。