应用开发者们甚至不知道孩子的发育标志意味着什么。
Developers don't even understand what the developmental signs in children mean.
他解释道，早产和较低的阿普加分数都有可能是孩子在胚胎时期的发育没有达到最理想状态的标志。
Both preterm birth and a low Apgar score may be markers of less-than-optimal fetal development, he explained.
关于癌症危险性的动物实验显示，这还可能是如青春期等发育阶段额外卡路里耗费的一个标志。
It could also be a marker for extra calories consumed in growth periods like adolescence, a suggested cancer risk seen in animal research.
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