hydrogen planet的意思|示意

Like its bigger neighbor Jupiter, Saturn is a gas planet made mostly of hydrogen and helium.

就像比它更大的邻居-木星一样，土星也是气体行星，主要由氢和氦所组成。

Having said that, we suspect that this new planet is made mostly of hydrogen and helium gas.

这样说来，我们猜测这可新发现的行星主要由氢气和氦气组成。

If a rocky planet is big enough - say, 10 times the mass of Earth - it can vacuum up so much hydrogen that its atmosphere ends up constituting most of the planet.

如果一个由岩石组成的行星足够的大——比方说，质量是地球的10倍——它可以吸收如此多的氢，以至于他的大气层最终会形成大部分的行星。