hydrogen
US /ˈhaɪ.drə.dʒən/
UK /ˈhaɪ.drə.dʒən/
名词
氢
a colorless, odorless, highly flammable gaseous element, the lightest of all elements, and the most abundant chemical substance in the universe, occurring in water and all organic compounds.
示例:
•
Water is composed of hydrogen and oxygen.
水由氢和氧组成。
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Scientists are exploring hydrogen as a clean energy source.
科学家们正在探索将氢作为清洁能源。