oxygen 的英语意思
oxygenoxygen /ˈɒksɪdʒən $ ˈɑːk-/ noun [uncountable] 
查看全部语言翻译 a gas that has no colour or smell, is present in air, and is necessary for most animals and plants to live. It is a chemical element: symbol O一种无色无味的气体，存在于空气中，是大多数动植物生存所必需的。它是一种化学元素：符号 O
查看全部语言翻译 a gas that has no colour or smell, is present in air, and is necessary for most animals and plants to live. It is a chemical element: symbol O一种无色无味的气体，存在于空气中，是大多数动植物生存所必需的。它是一种化学元素：符号 O