gas giant

基本解釋

The object was the gas giant Uranus.
這個物體就是氣體巨星天王星。
The exoplanet is a few times the mass of Earth, but it should still be small enough to be rocky rather than a gas giant like Jupiter.
這個系外行星的質(zhì)量是地球的幾倍，但是它還是足夠小而能夠由巖石構(gòu)成，而不是像木星是一團巨大的氣體。
Moving on through the asteroid belt we enter the realms of the gas giant planets: Jupiter, Saturn, Uranus and Neptune, all of which dwarf the Earth.
穿過小行星帶繼續(xù)前進，我們進入了氣體巨行星區(qū)域：木星、土星、天王星、海王星，所有這些都使地球看起來像個侏儒。

How do they get that information? What is a star, if not just a giant gas bottle, containerless?
他們是怎樣得到信息的？星星是什么？,如果不只是一個巨大的，空空的氣體瓶呢？
麻省理工公開課 - 固態(tài)化學(xué)導(dǎo)論課程節(jié)選

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one of the four planets in our solar system that are composed chiefly of hydrogen and helium, namely Jupiter, Saturn, Uranus, and Neptune 4