extension

1. N-COUNT An extension is a new room or building that is added to an existing building or group of buildings. (已有建築或建築群的) 延伸建築

We are thinking of having an extension built, as we now require an extra bedroom. 我們正在考慮擴建房屋，因爲我們現在需要多一間臥室。

2. N-COUNT An extension is a new section of a road or railway that is added to an existing road or railway. (已有公路、鉄路的) 延長路段

...a proposed extension to the No. 7 subway line. …提議的地鉄7號線的一段延長路段。

3. N-COUNT An extension is an extra period of time for which something lasts or is valid, usually as a result of official permission. 延長的期限

He first entered the country on a six-month visa, and was given a further extension of six months. 他最初憑有傚期爲6個月的簽証進入這個國家，之後又得到了6個月的續簽。

4. N-COUNT Something that is an extension of something else is a development of it that includes or affects more people, things, or activities. 延展

Many Filipinos see the bases as an extension of American colonial rule. 許多菲律賓人把這些基地看作是美國殖民統治的延展。

5. N-COUNT 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 is also used. (電話的) 分機[also N num]

She can get me on extension 308. 她可以通過分機308找到我。

6. N-COUNT An extension is a part connected to a piece of equipment in order to make it reach something further away. (設備的) 延伸部分

...a 30-foot extension cord. …一條30英尺的延長線。