hydrogen
US /ˈhaɪ.drə.dʒən/
UK /ˈhaɪ.drə.dʒən/
名詞
氫
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.
範例:
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Water is composed of hydrogen and oxygen.
水由氫和氧組成。
•
Scientists are exploring hydrogen as a clean energy source.
科學家們正在探索將氫作為清潔能源。