单词lowerclassman
na.: 〈美〉(大学等的)低级生网络: 低年级；大学低年级学生；大学低年学生
〔美国〕(大学等的)低级生〔一二年级生〕
But when he encountered a lowerclassman, he was too nervous to put a price on those books.
但与低年级同学面对面时，过于紧张的他甚至无法开口要价。