也许这样的生物学功能不大打扰你。
Maybe biological functions like these don't much bother you.
铁是人体必需的微量元素，有着重要的生物学功能。
Iron is an essential nutrient with crucial biological function.
现代生物学：身体怎样发挥功能和在哪儿能找到。
MODERN BIOLOGY: How the body functions, and where it can usually be found.
现代生物学：身体怎样发挥功能和在哪儿能找到。
MODERN BIOLOGY: How the body functions, and where it can usually be found.
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