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首页英语词典hydrogenhydrogen考试真题

hydrogen

英 ['haɪdrədʒ(ə)n] 美['haɪdrədʒən]

英英释义考试真题实用场景例句

n. [化学] 氢

考试真题

Most hydrogen and oxygen atoms in water are stable, but traces of both elements are also present as heavier isotopes.

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