A new study from michigan State University, though, argues that all students—including high achievers—see a decline in performance when they browse the Internet during class for non-academic purposes.
2018年12月六级真题（第二套）阅读
柯林斯高阶英汉双解学习词典释义
N-COUNT
（学业或事业上）达到（特定程度）成就（或成绩）的人
A high achiever is someone who is successful in their studies or their work, usually as a result of their efforts. A low achiever is someone who achieves less than those around them.