D (EN)

字母，名词，数词，符号

字母 “D”

1. 字母“d”的大写形式
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   The name "David" starts with the letters "D".

名词 “D”

1. 一个表示成绩好于不及格但差于C的等级
   Despite studying hard, she received a D in math, barely passing the course.
2. 在美国政治中，特指某一地区的民主党成员的简称。
   The senator, identified as D-California, spoke passionately about climate change.
3. 自动变速器上允许车辆向前移动的设置是“D”挡。
   Before you start moving, make sure the car is in D.
4. “dick”（一种对男性生殖器的俚语）的委婉语
   He's been bragging that she's totally into him for the D.
5. 德意志编号（指舒伯特的作品）
   Schubert's "Ave Maria" is listed as D. 839 in the thematic catalogue.

数词 “D”

1. 五百在罗马数字中是D。
   The number 650 in Roman numerals is DCL.

符号 “D”

1. 氘的符号，是氢的一种较重的同位素。
   Water containing deuterium is often referred to as D2O instead of H2O.
2. 数字13的十六进制表示法
   0x0D represents the number 13 in hexadecimal notation.
3. 德国的国际车辆注册代码
   On the back of the car, there was a sticker with the letter "D", indicating it was registered in Germany.
4. 生物化学中天冬氨酸的符号是D。
   In the protein sequence MKTVDGKLMN, "D" stands for aspartic acid, an amino acid important for enzyme activity.
5. 旦尼（一种用于测量纤维厚度的单位）
   The silk stockings were made of 100D fiber, making them quite durable and sheer.
6. 一个特定容量的胸罩罩杯的尺寸指示器
   She realized she had been wearing the wrong bra size for years and needed a D cup instead.