Enrolment has been rising for decades, egged on by parents, presidents of both political stripes (not to mention Mr Santorum, when a senator) and the rising wage premium that college graduates command.
几十来,大学录取持续攀升,这不仅得益于学生家长、两派总统们(更不必说当时还 身为参议员的桑托伦先生)的大力支持,亦归功于大学毕业生所得工资奖励日益升高。