Unpaid internships seem to be an example of mutual utility: inexperienced youngsters learn something about a chosen field while employers get to farm out some menial work.

无薪实习看上去倒是一个互惠互利的双赢选择：缺乏经验的年轻人可以学习所选方向的东西，雇主们也可以把脏活累活扔给实习生。