Letter · Frequency #2917
d
D；字母D
Letter and exact-case symbols
Spoken name: dee. Scientific symbols are case-sensitive.
the letter D
Letter name · 字母名称the 4th letter of the English alphabet
英文字母 D（第 4 个字母）
Source: BridgeDict Latin alphabet catalog
deci
SI prefix · 国际单位制词头the SI prefix deci, representing a factor of 10^-1
国际单位制词头 deci，表示 10^-1
Source: BIPM SI Brochurethe 4th letter of the Roman alphabet
- 1.
Canonical decomposition
规范分解
- 2.
The semicircle on the baulk line, inside which the cue ball must be placed at a break-off.
在开球时,母球必须放置在球台上半圆区域内
- 3.
An academic grade given by certain institutions. Slightly better than a D and slightly worse than a C-.
某些机构给出的学术成绩,略好于D,略差于C-。
- 4.
An academic grade given by certain institutions. Slightly better than an E+ and slightly worse than a D. D minuses are sometimes the lowest passing grades.
某些机构给出的学术成绩,比E+稍好,比D稍差。D-有时是最低的及格分数
- 5.
District, as used in case citations.
用于案件引述中的地区。
- 6.
The penalty arc on a football pitch.
足球场上的罚球弧
- 7.
In use
She wrote a small d next to her name on the list.
The password must contain at least one capital D.
My initial is D, short for Daniel.
the letter D
表示字母D本身，大写为D，小写为d。
The first letter of the word is 'd'.
这个词的第一个字母是d。
capital D
强调大写形式。
Please write your name with a capital D.
请用大写D写你的名字。
Connections
Collocations
- the letter D
- 字母D
- The word 'dog' starts with the letter D.单词'dog'以字母D开头。
- capital D
- 大写字母D
- Please write your name with a capital D.请用大写字母D写你的名字。
- small d
- 小写字母d
- The small d looks like a circle with a line.小写字母d看起来像一个圆加一条线。
Learner notes
Memory Tip
字母d形似弯弓，读音似'迪'。
Context & Register
字母d作为英语字母表第四个字母，通常用于拼写、排序、符号表示等中性场合，无特殊语体限制。
Grammar Note
表示罗马字母表中的第四个字母，常缩写为D。
Pronunciation & Spelling
Words beginning with 'd' followed by 'ee' share the same /diː/ sound as the letter 'd'. Note that 'd' in words like 'ad' (æd) or 'ed' (ɛd) is pronounced differently.
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY, BridgeDict Latin alphabet catalog, BIPM SI Brochure.