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必需营养素 [bì xū yíng yǎng sù]
essential nutrients
- 提供必需营养素，包括维他命C、B杂、钙、磷及硒。
Source of essential nutrients, including vitamins C, B complex, calcium, phosphate and selenium. - 婴儿和儿童婴儿和儿童对能量和必需营养素的需要量高，其营养低下的危险性也高。
Infancy and childhood: Because of the high demand for energy and essential nutrients, infants and children are at particular risk of undernutrition. - （通常人们将机体本身代谢不能产生而且也不能被其他物质所代替的物质称做必需营养素。）
Such substances, which can neither be generated through the body's metabolism nor be replaced by other matter, are usually called essential nutrients.
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