it is one of natures great ironies that the availability of nitrogen in the soil frequently sets an upper limit on plant growth even though the plantsleaves are bathed in a sea of nitrogen gas
尽管植物的叶子沐浴在氮气的海洋中,但土壤中氮的可用性常常为植物的生长设定了上限,这是大自然的一大讽刺
以上为机器翻译结果,长、整句建议使用 人工翻译 。