名词

打对方付费电话

打电话

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.

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.

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.

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.

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.

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.

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