正确情况下，这些腺体分泌的激素在血液中的浓度及其相互比例都保持一定的水平，这种水平随着年龄的增长而变化，才能促成正常的身高。
In correct situation, they are maintained certain level that these glands secretion's hormone's density in blood and mutual proportion, that will change with aging, then facilitate normal growth.
正确情况下，这些腺体分泌的激素在血液中的浓度及其相互比例都保持一定的水平，这种水平随着年龄的增长而变化，才能促成正常的身高。
In correct situation, they are maintained certain level that these glands secretion's hormone's density in blood and mutual proportion, that will change with aging, then facilitate normal growth.
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