大学生通过手机或者电脑怎么赚钱？

经济危机下，如果政府要对某些领域减少投入，在图书馆、公共交通、警察这三者中，应该减少对哪个的投入？

In times of economic crisis, local governments usually reduce the money they spend in some areas, in your opinion, if a local government is facing economic problems, which of areas should it spend l