于莹莹
于莹莹-
在校园摆摊真的很薄利，因为和同学做生意时你不能表现得像生意人一样太贪心，于莹莹说。
Campus sales are really cheap , because you cannot act like a greedy businesswoman when dealing with fellow students , said Yu .
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于莹莹是华中科技大学的大四学生。她发现，相比于校园摊，在网上卖二手书能赚更多的钱。
Yu Yingying , a senior at Huazhong University of Science and Techonology , finds she can earn more from selling secondhand books online than on campus .