dry gas hydrogen-producing 干气制氢
hydrogen enriched dry gas 富氢干气
hydrogen-enriched dry gas 富氢干气
The core could be very, very rich in hydrogen (a water ingredient) or totally dry.
地核中可能有巨量的氢（水分子的一种组分）或者完全干燥。
The waves of damp and dry conditions suggest water is created on the moon every day, when hydrogen nuclei in the solar wind slam into oxygen-rich silicate minerals on the moon's surface.
潮湿和干燥条件的交替波动表明，月球上每天都在生成水——太阳风中的氢原子核与月球表面富含氧的硅酸盐矿物相撞而成。
Mars is too dry and poor in oxygen, Venus far too hot, and so is Mercury, and the outer planets have temperatures near absolute zero and hydrogen-dominated atmospheres.
火星太干燥又缺氧，金星太热，水星也一样。除此之外，太阳系的其他行星的温度都接近绝对零度，并围绕着以氢气为主的大气层。
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