土壤圈的生物也非随意杂居，真菌，细菌，蠕虫，及其他小型生物，都有自己的位置。
Life at the ground level is not just a random mix of species, not an interspersion of fungi, bacteria, worms, ants, and all the rest.
碳循环是一个生物地质化学循环圈，碳通过此循环在生物圈、土壤圈、地层、水圈、大气中交流。
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
碳循环是一个生物地质化学循环圈，碳通过此循环在生物圈、土壤圈、地层、水圈、大气中交流。
The carbon cycle is the biogeochemical cycle by which carbon is exchanged among the biosphere, pedosphere, geosphere, hydrosphere, and atmosphere of the Earth.
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