| 单词 | oxygen cycle |
| 释义 | oxygen cyclenoun 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. Origin of oxygen cycleFirst recorded in 1930–35 Words nearby oxygen cycleoxygenation, oxygenator, oxygen bar, oxygen capacity, oxygen consumption, oxygen cycle, oxygen debt, oxygen deficit, oxygen demand, oxygen-deprivation theory of narcosis, oxygen effect Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 |
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