墨西哥研究包括墨西哥儿童和青年国家卫生中心和美国疾病控制和预防中心的研究人员。

The Mexican study included researchers from the National Center for Child and Adolescent Health in Mexico, and from the Centers for Disease Control and Prevention in the US.

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课程包括儿童心理学，家庭研究，青年活动和交流技巧等。

Courses include such topics as child psychology, family studies, youth activities, and communication skills.

youdao

课程包括儿童心理学，家庭研究，青年活动和交流技巧等。

Courses include such topics as child psychology, family studies, youth activities, and communication skills.

youdao