Objective to identify the language development in 2 to 4-year-old children.
目的了解2 ~4岁儿童正常的语言发育规律。
Last week, my 4-year-old daughter Sally was invited to take part in a children party.
上周，我4岁的女儿萨莉被邀请去参加一个儿童聚会。
Last week, my 4-year-old daughter Sally was invited to take part in a children party.
上周，我4岁的女儿萨莉被邀请去参加一个儿童聚会。
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