extension

英 [ɪk'stenʃn] 美 [ɪk'stenʃn]

• n. 延长；伸展；延期；扩充；观念发展；增强
• n. 电话分机；特别课程
• n. [计]文件名

双解释义

n. (名词)

1. [U]延伸,扩展

   (an example of) the act of extending or being extended

2. [C]增加部分

   a part which is added to make sth longer, wider, or larger

3. [C]电话分机

   any of many telephone lines which connect various rooms or offices in a large building to the switchboard

详尽释义

n. 名词

1. 扩大，扩展，伸展，延长，伸长，延伸
2. 扩大部分，延长部分
3. 延期，缓期
4. 增设部分，增建部分
5. 电话分机
6. 范围
7. 缓期
8. 广度
9. 延长线
10. 附加物
11. 铺张
12. 【物】广延性

英英释义

Noun:

1. a mutually agreed delay in the date set for the completion of a job or payment of a debt;

   "they applied for an extension of the loan"
   

2. act of expanding in scope; making more widely available;

   "extension of the program to all in need"
   

3. the spreading of something (a belief or practice) into new regions

4. an educational opportunity provided by colleges and universities to people who are not enrolled as regular students

5. act of stretching or straightening out a flexed limb

6. a string of characters beginning with a period and followed by one or more letters; the optional second part of a PC computer filename;

   "most applications provide extensions for the files they create"
   "most BASIC files use the filename extension .BAS"
   

7. the most direct or specific meaning of a word or expression; the class of objects that an expression refers to;

   "the extension of `satellite of Mars' is the set containing only Demos and Phobos"
   

8. the ability to raise the working leg high in the air;

   "the dancer was praised for her uncanny extension"
   "good extension comes from a combination of training and native ability"
   

9. amount or degree or range to which something extends;

   "the wire has an extension of 50 feet"
   

10. an additional telephone set that is connected to the same telephone line

11. an addition to the length of something

12. an addition that extends a main building

例句

用作名词 (n.)

1. This cord is not long enough! do you have an extension?
   这条绳子不够长！你有长一点的吗？
2. His leg was now capable of full extension.
   他的腿现在能够伸展自如了。
3. He asked for an extension of his visa.
   他申请延长签证有效期。
4. We built an extension to our house.
   我们扩建了我家的房屋。
5. He sees local history as an extension of family history.
   他认为当地的历史是每个人家庭历史的发展。
6. The country decided to have an extension of government control on the market.
   该国决定对市场加强政府监管。

用作名词 (n.)

1. There are telephone extensions in every office.
   每间办公室都有电话分机。

用作名词 (n.)

1. Method will only return one unique file name per file name extension.
   方法对每个文件名扩展名只返回一个唯一文件名。
2. You can optionally filter the list by extension and keyword contained inthe file name, and also choose to include sub-directories.
   你可以按照包含在文件名当中的扩展名和关键字有选择地过滤列表，并且还可以选择包括子目录。

常见句型

用作名词 (n.)

1. They have built an extension to the hospital.
   他们扩建了这家医院。
2. The pupils disliked the extension of the term.
   小学生们不愿延长学期。
3. The extension is nearly finished.
   扩建部分已近完工。
4. The extension is 8010.
   分机号码是8010。

经典引文

• The metaphor of the psychic voyage is an extension of the romantic idea of travel.

  出自： S. Sontag

词汇搭配

用作名词 (n.)

动词+～

• ask for〔request〕 an extension 要求延期
• get〔receive〕 an extension 得到延期
• grant an extension 批准延期

形容词+～

• three-month extension 三个月的期限
• two-room extension 扩建了两间屋
• further extension 进一步延长

名词+～

• business extension 分店营业所
• pedal extension 踏板的接长节
• railway extension 铁路的延长部分
• telephone extension 电话分机
• time extension 延长时间

～+名词

• extension ladder 伸缩梯
• extension number 分机号
• extension spring 弹簧

～+介词

• extension of time limit 时限的延长
• extension to the hospital 医院的扩建

词语用法

1. extension同extent均是extend的名词形式:前者既可作不可数名词，表示“伸展，扩充”，也可作可数名词，表示“附加部分，延伸部分”。例如the extension of foreign trade（外贸的扩展）和an extension of one's summer holidays（暑假的延长时间）。后者表达的是“事物延伸的广度，程度，范围等”，如through the whole extent of the country（在全国范围内）。

词源解说

• ☆ 1400年左右进入英语，直接源自古典拉丁语的extendere，意为事物伸展的部分。

近反义词

【近义词】

• addition
• increase

【反义词】

• decrease
• shortening