我发现这非常奇怪，它们就好像行星一样拥有大气层。
I find it uncanny that they seem to have an atmosphere just like a planet.
该探测器第一次在木星这个气体行星的大气层里采样。
The probe was the first to sample the atmosphere of a gas planet.
这颗行星有相对较薄的大气层，主要由氮气和氧气组成。
The planet has a relatively thin atmosphere composed mostly of nitrogen and oxygen.
因此，行星就很难产生大气层。
所谓大大气层是指包围在某个行星或者其他巨大物体表面的一层气体。
The atmosphere is the layer of gases that surrounds a planet or other massive body.
TITAN是所有行星的卫星中唯一有自己的大气层的卫星。
It is the only moon of any planet which has its own atmosphere.
TITAN是所有行星的卫星中唯一有自己的大气层的卫星。
It is the only moon of any planet which has its own atmosphere.
应用推荐