| 释义 |
the carbon cycle
noun only singular specialized
■the continuous circulation of carbon between different living organisms on Earth and between living organisms and the environment, through natural processes like photosynthesis , respiration and decomposition in the soil, and also the burning of fossil fuels 碳循环（生物之间或生物与环境之间的碳物质交换，主要途径有生物的光合作用、呼吸作用，土壤中生物的腐烂分解及化石燃料的燃烧） |