youngster

n. 年青人,少年

"People, especially youngsters don't seem so polite these days."

＂如今人们，尤其是年青人好象不那么讲礼貌了。＂

It is hard for an old man to work as long as a youngster.

老年人要工作得和年轻伙子一样久是困难的。