Leatherbacks apparently do not generate internal heat the way we do, or the way birds do, as a by-product of cellular metabolism.

棱皮龟显然不把热量当作新陈代谢的副产品，以我们产生内部热量的方式，或者鸟类产生内部热量的方式来产生出来。

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Iron is the necessary micronutrient for cellular metabolism used by almost all bacteria.

铁是所有细菌活细胞代谢必要的微量营养元素。

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This deficiency impairs the body's ability to get rid of toxins, whether environmental or by-products of cellular metabolism.

这种缺陷会损害身体的能力，以获得摆脱毒素，无论是环境或细胞的新陈代谢的副产品。

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The digestive system, of course, is responsible for bringing in sort of fresh nutrients, fresh substrates for cellular metabolism, fresh quantities of amino acids, and nucleotides, and the things that we can't generate internally.

当然,还有消化系统,它主要负责将各种新鲜营养物摄入体内,为细胞代谢提供新的底物,如一批新的氨基酸,核苷酸,以及那些人体无法自行合成的东西

耶鲁公开课 - 生物医学工程探索课程节选

Some of the proposed explanations for the link between shift work and obesity, such as irregular meal times and metabolism disruptions at the cellular level, may help explain the social jet lag findings as well, Roenneberg says.

CNN: Is 'social jet lag' harming your health?