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。

youdao

Background: Studies have shown that 27% to 38% of girls with adolescent idiopathic scoliosis have systemic osteopenia.

背景：研究显示27%到38%的青少年特发性脊柱侧凸女孩存在全身骨质减少。

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