| 释义 | 
		- abbr.用于1971年前;〈口(=do);〈口,书(=would)
 - n.英语字母表的第 4 个字母
 - 网络丁;密度;第四
 
 1.  | 英语字母表的第 4 个字母the fourth letter of the English alphabet  |  
  | ‘Dog’ begins with (a) D/‘D’. dog 一词以字母 d 开头。  |  
 2.  | D 音(C 大调的第 2 音或音符)the second note in the scale of C major  |  
 3.  | (学业成绩)第四等,差the fourth highest mark/grade that a student can get for a piece of work, showing that it is not very good  |  
  | He got (a) D/‘D’ in/for Geography. 他的地理成绩得 D。  |  
 1.  | 民主党人;民主党的Democrat ; Democratic  |  
 1.  | (罗马数字) 500the number 500 in Roman numerals  |  
 abbr.  | 1. <dated>penny or pence, used in the system of money used in the UK before 1971 3. <spoken,written>(=would)  |  na.  | 1. the fourth letter of the english alphabet 2. the fourth highest grade in a series, e.g. a below-average grade for academic work 3. the roman numeral for 500 4. [Music]the second note in the musical scale of C major 1. the fourth letter of the english alphabet 2. the fourth highest grade in a series, e.g. a below-average grade for academic work 3. the roman numeral for 500 4. [Music]the second note in the musical scale of C major  |  
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