overachievers 
n. 成就超出预料的成功者;成绩超过预料的学生(overachiever的复数)
- As he stood in front of the group of overachievers he said, "OK, time for a quiz.
但这一次学生有些明白了,“可能还没有”,一位学生应道。“很好!”专家说。 - Brown.And some admissions officials acknowledge that they became jaded by all the young overachievers.
一些招生官员承认他们被这些漂亮的学生弄得精疲力尽。 - We don't need to be heroes or overachievers to do something charitable. No one asked us to erase poverty at once.
我们不需要在慈善这件事上成为英雄,一挥袖能抹去万千贫穷。