"professor, i did the best i could on this test. i really don't think i deserve a zero."
学生：“教授先生，我这次考试已经竭尽全力了。我真的觉得我不应该得零蛋。”"neither do i. but that's the lowest grade i'm allowed to give."
老师：“我也是。但是这已经是我能给的最低分了！”