单词：air-breathing 

形容词

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  [1.a.air-breathing] (同义词:[air-breathing]  )
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  注释列句：deriving oxygen from the air; "he studied respiration in marine air-breathing vertebrates"; "large air-breathing ichthyosaurs had hydrofoils"
• 属于名词 -> [breathing( n. 呼吸, 瞬间, 微风 adj. 呼吸的, 逼真的, 短暂的休息 )]