Dr.Mishori says this is not necessarily a good guideline to follow.
VOA: special.2011.04.20
When I open the blue book, the Yale guideline, the Yale catalog, it's got a page, as you all know, where it says what letter grades mean at Yale.
我打开那本蓝皮书,耶鲁指导手册,耶鲁目录,有这么一页,都见过,讲耶鲁每个评分字母表示什么。
So usually the guideline is anywhere usually around 18%.
通常来说,小费的标准是在18%左右。
That's pretty much the guideline.
这个标准是不错的。
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