The researchers used a national long-term survey of adolescent health to investigate the relationship between media use and depression.

VOA: special.2009.02.11

and you sacrifice yourself to help other people even when you're a child or adolescent,

甚至在你是小孩或者青少年的时候就牺牲自己帮助他人，

挽救生命的工作 - SpeakingMax英语口语达人

American researchers used a national long-term survey of adolescent health to investigate the link between media use and depression.

VOA: special.2009.03.10

Her MySpace page says her doctor once told her she had the larynx of a "very young adolescent."

VOA: special.2009.01.30

The research appears in the Archives of Pediatric and Adolescent Medicine, a journal of the American Medical Association.

VOA: special.2010.12.15

On average, each adolescent reported using some kind of media five and one-half hours a day.

VOA: special.2009.03.10

Shamim Qazi is a pneumonia expert at the WHO Department of Child and Adolescent Health and Development.

VOA: standard.2009.11.02