underemployed
adj. 未充分就业的；学非所用的；只有部分时间被雇用的
n. 大材小用的人
例句
They may also be described as underemployed or freelance workers.
他们有时也被称为失业人员或者自由职业者。
Lots of underemployed young people mean too many hotheads and not enough elders.
大量的无业青年意味着太多的莽汉和太少的老人。
And for every two Mexicans without a job, there are three who are underemployed.
每两个墨西哥人没有工作，三个是钟点工。
