They study diagnosis, child and adolescent development, learning theory, testing, ethics, and more.
他们学习诊断法，儿童及青少年的成长，学习理论，测试，道德等。
The authors conclude: "Our study demonstrates the benefits of youth sports participation on self-rated health and life satisfaction among young youth at a critical juncture in adolescent development."
研究者因而得出结论：“我们的研究让身体活动的重要性在处于青春期关键节点的青少年对自我身体评估和人生满意度提升上充分体现出来。”
Objective The growth charts of height, weight and body mass index (BMI) based on skeletal age were prepared for evaluating adolescent growth and development in age estimation for adolescent.
目的制订青少年骨龄标准身高、体重和体重指数生长图表，为年龄推测时评价青少年基本发育状况提供参考。
Objective To investigate the process of puberty development of healthy adolescent girls in Northern China.
目的了解中国北方健康女性青少年青春期性发育过程。
Objective To investigate the process of puberty development of healthy adolescent girls in Northern China.
目的了解中国北方健康女性青少年青春期性发育过程。
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