Moon gas

月气───Moon gas

the other hand, a comparatively warm body with a small surface gravity, like Earth's moon, is unable to hold even the heaviest gas and thus lacks an atmosphere.───另一方面，像地球的卫星这种相对温暖、表面引力较小的天体，它们连最重的气体也无法容纳，因此也没有大气层。

That moon would have interacted with a disk of gas surrounding Saturn at the time, dragging its orbit closer and closer.───这颗卫星在那时可能与土星外的气态光环发生了作用，造成它的轨道越来越靠近土星。

The Sun, Moon, and the planets formed from a huge spinning gas cloud that collapsed into a gyrating disc.───太阳、月亮和这些星球形成于倒塌进一个旋转盘状物的一团巨大旋转汽云。