extension

noun

1. act of expanding in scope
making more widely available

e.g. extension of the program to all in need

2. act of stretching or straightening out a flexed limb

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

Synonym: extension serviceuniversity extension

4. an addition that extends a main building

Synonym: annexannexewing

5. an addition to the length of something

Synonym: elongation

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

Synonym: telephone extensionextension phone

7. amount or degree or range to which something extends

e.g. the wire has an extension of 50 feet

Synonym: lengthinessprolongation

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

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

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

e.g. the extension of `satellite of Mars' is the set containing only Demos and Phobos

Synonym: referencedenotation

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

Synonym: propagation

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

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

Synonym: filename extensionfile name extension

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

e.g. they applied for an extension of the loan

1. （房屋的）扩建部分
An extension is a new room or building which is added to an existing building or group of buildings.

extension是什么意思

2. （公路、铁路等的）延长线
An extension is a new section of a road or rail line that is added to an existing road or line.

e.g. ...the Jubilee Line extension.
银禧延长线

3. 展期；延长期
An extension is an extra period of time for which something lasts or is valid, usually as a result of official permission.

e.g. He first entered Britain on a six-month visa, and was given a further extension of six months...
他最初持6个月的签证进入英国，后来又获得6个月的续签。
e.g. Ian Lentern has been granted a three-year extension.
伊恩·伦特恩已经被批准延期3年。

4. 扩大;扩展;延伸
Something that is an extension of something else is a development of it that includes or affects more people, things, or activities.

extension的解释

e.g. Many Filipinos see the bases as an extension of American colonial rule...
很多菲律宾人视这些基地为美国殖民统治的延续。
e.g. That's the logical extension of my approach.
那是对我的方法的合乎逻辑的扩展。

5. 电话分机（亦用书面缩略ext.）
An extension is a telephone line that is connected to the switchboard of a company or institution, and that has its own number. The written abbreviation ext. is also used.

e.g. She can get me on extension 308...
她打308分机就能联系到我。
e.g. For further information, please contact 414 3925, extension 2253.
详情请致电414 3925,转分机2253。

6. （设备的）延伸部分
An extension is a part which is connected to a piece of equipment in order to make it reach something further away.

e.g. ...a 30-foot extension cord... 30
英尺的延长线
e.g. Some of the best extensions are made from sections of rod tube or drainpipe.
最好的延长管中有些是用杆管或排水管制成的。

1. 分机：3. 在相应的 分机 (extension) 中使用这个 context,这个分机的呼出就受到相应的限制了.示例: 只允许分机号 (200) 拨叫其他分机 (extension) 号码

2. extension

2. 扩充：另外,值得一提的是,这套稽核程式库,必须要拥有足够的弹性(Flexibility)以及扩充(Extension)能力,原因是每个产业的营运作业皆有很大的差异,每个产业适用的标准皆不同;就算是同产业的公司,其所关注的作业流程及其稽核重点也会有所差异.

3. 延期：如果你的签证页还有许多没用完,只要办延期(extension)即可,就是护照上加盖延期章,不用换护照,那样更快.

4. 延长：一个周期经过DNA变性(denature),引子接合(anneal) 和DNA延长(extension)三个步骤,在30个周期循环后,DNA的量可增加到10 6倍,此特定区段内足量的DNA可以在很短时间内,以微胶电泳分析出特异的DNA片断,做为诊断的依据.

5. extension：ext; 增加一个约束

6. extension：extsn; 扩展，延伸