单词 | nitrogen cycle |
释义 | Word Frequency nitrogen cyclenoun the natural circulation of nitrogen by living organisms. Nitrates in the soil, derived from dead organic matter by bacterial action, are absorbed and synthesized into complex organic compounds by plants and reduced to nitrates again when the plants and theanimals feeding on them die and decay nitrification, nitrogen fixation |
随便看 |
英语词典包含233703条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。