Boeldt is a clinical psychologist with a background in child development. Her team found that nearly one in five children under the age of 13 spend four or more hours online daily, and that’s leading to increased depression and anxiety levels among the internet’s youngest users.
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2026-02-27 00:00:00:0 第六十九号，这一点在WPS官方版本下载中也有详细论述
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