Letter grade only may be repeated for a maximum of 9 units.

字符的出现级别最大只能为9个字节。

SID SRIRAM, STUDENT :Just to see that letter grade, to see that A on the paper, it's a pretty good feeling.

学生 席德·斯里兰:只要看到考卷上大大的字母A就会感觉很不错。