carbon cycling

• 碳循环

carbon cycling的用法和样例：

例句

1. Microbes and plants play substantial roles in the global cycling of carbon through the environment.
   各种微生物与植物透过环境在全球总体碳循环中扮演重要角色。
2. The carbon cycle has thus acquired another epicycle, and become even more complicated to understand than it was.
   碳循环因此又得纳入另一个亚循环，以致变得更加复杂难以理解。