He was showing off, as is the way with adolescent boys.

他在炫耀，青春期的男孩都是这个样子。

《牛津词典》

Nursing Care of Patients with Adolescent Idiopathic Scoliosis Treated with Braces.

支具治疗青少年特发性脊柱侧弯的护理。

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Promoting parts party as a positive, effective and creative tool working with adolescent with depression.

推崇面貌舞会的积极、有效和创造性，是一个与抑郁症青少年工作的好工具。

youdao

Other doctors simply don't want to broach the subject of sex with their adolescent female patients, he said.

CNN: STDs still on the rise, report says

Resolutely and with surprising agility, the writer with the adolescent air sprang to his feet and rushed out into the street.

NEWYORKER: The Insufferable Gaucho

She even texts with her adolescent patients.

WSJ: When Email Is Part of the Doctor's Treatment