He had a neat idea and that was to give letter grades to securities that represented credit worthiness.
他有个绝妙的主意，就是用字母，给证券评级，以此来代表其信用状况。
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。
As a result, some American Montessori schools now issue letter grades just as non-Montessori classes do.
因此，有些美国的蒙氏学校现在按字母等级评分，跟非蒙氏班级一样。
Similar stickers already exist in states like California and Vermont, though they use Numbers rather than letter grades.
类似的油耗标签等级已经在加利福尼亚州和佛蒙特州出现，不过这些州用的不是字母而是数字。
Similar stickers already exist in states like California and Vermont, though they use Numbers rather than letter grades.
类似的油耗标签等级已经在加利福尼亚州和佛蒙特州出现，不过这些州用的不是字母而是数字。
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