这些营养素在胃肠道消化吸收并进入人体，保证机体的正常生长发育和各种生理功能。
These nutrients are digested in gastrointestinal tract and absorbed into the body to ensure the normal growth and development of body and physiological functions.
近些年的研究已经确认，饥饿如果发生在产前和婴儿时期，孩子的大脑就无法获取使其正常发育的营养。
Research in recent years has established that hunger in the prenatal period and in infancy deprives a child of the nourishment the brain needs to grow properly.
婴儿在断奶期应补充各种营养物质，以满足其迅速生长发育的需要，配合正常的母乳喂养。
Infant at weaning period should be complemented with nutrients to satisfy their requirements for rapid growth and development and also supplement to breastfeeding.
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