Perception of movement and space starts in very early infancy.

宝宝很早就有对动作和空间的概念。

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Children treated during infancy or early childhood are at the highest risk.

被治疗的孩子处于婴儿期或幼年时期是高度危险期。

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Children treated during infancy or early childhood are at the highest risk.

被治疗的孩子处于婴儿期或幼年时期是高度危险期。

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