underachiever
n. 后进生；学校学习成绩低于智商的学生
复数 underachievers
例句
If the solar system has an underachiever, it has to be Venus.
如果太阳系有一个后进生，那一定是金星。
He just wanted people to stop calling him disadvantaged, an underachiever.
他就是想要人们别再叫他贫穷的失败者。
《柯林斯英汉双解大词典》
She will never gain weight, she will become a metabolic underachiever.
她永远不会发胖，只是新陈代谢不足。
