| 释义 | E, e/i; iː/  n  [C,U] plural E's , e's  1  the fifth letter of the English alphabet 英语字母表的第五个字母 2  the third note in the musical SCALE  of C MAJOR , or the musical KEY  based on this note E 音〔C 大调音阶中的第三个音〕﹔E 调 3  a mark given to a student's work to show that it is of very low quality E 级〔表示学业成绩差〕: 
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