新陈代谢不是指食物的消化能力，而是指一种在组织细胞内发生的化学变化。
Metabolism isn't about the digestion of food in your stomach; it's the name given to all of the chemical changes that occur in an organism's tissue cells.
组织化学试验表明，蜜腺组织细胞内的淀粉粒是蜜汁的主要物质来源之一。
The histochemistry testes show that the starch grains in nectariferous tissue is the main source of the nectar.
受试者在注意力集中测试中完成越好，与脑组织细胞有关的化学物质水平越高。
The volunteers also performed better in concentration and attention test and had higher levels of chemicals linked to brain cell function.
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