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hydrogen
英/hˈaɪdɹədʒən/
美/ˈhaɪdɹədʒən/
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01n.
氢
a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe
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a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe