This capability, referred to as the approximate number system (ANS), is normally present in infants and improves with age.
这种能力，可称之为略估数学系统(ANS)，在婴儿时期就存在并随着年龄增长而增强。
This capability, referred to as the approximate number system (ANS), is normally present in infants and improves with age.
这种能力，可称之为略估数学系统(ANS)，在婴儿时期就存在并随着年龄增长而增强。
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