The study of the causes of the vagrancy of the wandering children and their motive mechanism is a popular focus in the study of the vagrant children as a group.
流浪儿童流浪的原因与动力机制是流浪儿童群体研究的一个主要领域。
The study of the causes of the vagrancy of the wandering children and their motive mechanism is a popular focus in the study of the vagrant children as a group.
流浪儿童流浪的原因与动力机制是流浪儿童群体研究的一个主要领域。
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