早前的研究对象是年龄较大儿童的数学能力与数觉的关系，但里柏图斯的研究团队对象则是200名平均年龄仅4岁的低龄儿童。
Past research has associated number sense with math ability in older children, but the Libertus and her team's study involved 200 younger children with an average age of 4.
早前的研究对象是年龄较大儿童的数学能力与数觉的关系，但里柏图斯的研究团队对象则是200名平均年龄仅4岁的低龄儿童。
Past research has associated number sense with math ability in older children, but the Libertus and her team's study involved 200 younger children with an average age of 4.
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