Definition
n.
hydrogen (chemical element)
Examples
- 氢。Shuǐ shì yóu qīng hé yǎng zǔchéng de.Water is composed of hydrogen and oxygen.
- 。Zhè zhǒng qìqiú lǐmiàn zhuāng de shì qīng qì.This kind of balloon is filled with hydrogen gas.
- 氢。qīng shì yì zhǒng hěn qīng de yuánsù.Hydrogen is a very light element.
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