首页英语词典hydrogenhydrogen考试真题

hydrogen

英 ['haɪdrədʒ(ə)n] 美['haɪdrədʒən]
  • 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.

2015年12月六级真题(第二套)听力 Section C