a woman whose merits were not been recognized but who then achieves sudden success and recognition n
n cyclotron that achieves relativistic velocities by modulating the frequency of the accelerating electric field
overachieves
v. （学生）成绩超出智力测验预示水平； 完成得比预期要好, 超过预期目的( overachieve的第三人称单数 ); 超过（预期目的等）
underachieves
n. 学习成绩不良, 未能发挥学习潜能( underachieve的名词复数 )
