The studies -- in which parents were asked about day care and playgroup attendance -- varied when it came to the timing, duration and extent of social interaction with other children, the researchers.
被回顾的各个研究，其形式一般是询问父母孩子上日托班和幼儿游戏组的情况，而结果随研究的开展日期，持续时间，与其他孩子交往程度不同而不同。
Some social media users said the timing of the video's release.
有社交媒体用户说这段视频的发布时间有欠考虑。
Some social media users said the timing of the video's release.
有社交媒体用户说这段视频的发布时间有欠考虑。
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