car·bon cy·cle
noun/ˈkɑːbən saɪkl/
/ˈkɑːrbən saɪkl/
[usually singular]- the processes by which carbon is changed from one form to another within the environment, for example in plants and when wood or oil is burned
碳循环（指碳在自然环境中的形式变化过程）
| 单词 | carbon-cycle |
| 释义 | car·bon cy·clenoun/ˈkɑːbən saɪkl/ /ˈkɑːrbən saɪkl/ [usually singular]
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