nitrogen cycle

美

英

n.氮循环（各种形式的氮在自然界的循环）
网络氮素循环；氮化合物循环；氮的循环

权威英汉双解

英汉

英英

nitrogen cycle

1.	氮循环（各种形式的氮在自然界的循环）the processes by which nitrogen is passed from one part of the environment to another, for example when plants decay

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