hydrogen
🇺🇸
/ˈhaɪdrədʒən/
🇬🇧
/ˈhaɪdrədʒən/
noun
C1
The lightest chemical element, a gas that combines with oxygen to make water.
Hydrogen is used as fuel because it burns cleanly and produces only water.
氫被用作燃料，因為它燃燒清潔且只產生水。
translation
氫
詞形變化
Plural
hydrogens