念旧爱人命Lv5 初入说偶网 2014-03-26 04:02:06
"I can always tell a graduate class from an undergraduate class，" observed the instructor in one of my graduate engineering courses at California State University in Los Angeles.
“研究生班和本科生很容易就能区别开来，”在洛杉矶加利福利亚州立大学给我们研究生上工程学课的老师如此说.
"When I say，'Good afternoon，' the undergradu
……
