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单词
oxygen cycle
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ox
′
ygen cy′cle,
[
Ecol.
]
Ecology
the process by which oxygen released into the atmosphere by photosynthetic organisms is taken up by aerobic organisms while the carbon dioxide released as a by-product of repiration is taken up for photosynthesis.
1930–35
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更新时间:2025/11/26 6:09:36