A youngster who develops diabetes in his teens may need a kidney transplant by the time he's thirty."

VOA: special.2010.06.07

So these devices, when I was a youngster, were colloquially known as "atom smashers", because they have the capacity to actually break these and have them reform.

这些设备，当我还年轻的时候，它们在口语中被叫做核粒子加速器，因为它们有能力,将这些破碎并重新形成。

麻省理工公开课 - 固态化学导论课程节选

Well, if you're youngster and every time you see a problem,

嗯，如果你小的时候，每次一看到难题，

挽救生命的工作 - SpeakingMax英语口语达人

A second implicit purpose for the youngster-aged group is a baby-sitting purpose.

对青少年群体来说,第二个深层目标,充当临时保姆。

麻省理工公开课 - 媒体、教育、市场课程节选