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| NOUN |
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| /ɪkˈstenʃn/ |
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| 1 | C an extra room or rooms added to a building （建筑物）扩建的部分 |
| We are building an extension on the back of our house. 我们正在屋后进行扩建。 |
| +to Add a kitchen extension to your home. 在你家里扩建一个厨房。 |
| | 1a | a part of a road or railway line added to the existing one （公路或铁路的）延长部分 | | a proposed motorway extension 拟议中的高速公路的延长路段 | |
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| 2 | C a telephone line that is one of several lines coming from a main line （电话）分机 |
| What’ s your extension? 你的电话分机号是多少？ |
| I’ m on extension 334. 我的分机号是334。 |
| a new extension number 新的分机号 |
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| 3 | C extra time you are given to finish a piece of work , especially at college or university （尤指学院或大学中为完成作业所给的）延长的时间，放宽的期限 |
| +on I’ m going to ask for an extension on this essay. 我打算请求延期交这篇文章。 |
| | 3a | extra time you are given to pay money that you owe （还款的）延长期限 | | +on Will the bank give you an extension on the loan? 银行会给你延长贷款期限吗？ | |
| | 3b | extra time you are given to use a particular legal document or right （法律文书或权利的）延期 | | a visa extension 签证的延期 | | +to Brady wants a two-year extension to his contract. 布雷迪想将他的合同延长两年。 | |
| | 3c | extra time that a shop , business , or bar is allowed to stay open （营业时间的）延长 | | There was a bar extension until midnight. 酒吧延时营业至午夜。 | | +to Local shops have been granted an extension to opening hours. 当地商店已经被允许延长营业时间。 | |
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| 4 | C something you add to a long thin object to make it able to reach somewhere 延长物 |
| This lead isn’ t long enough – do you have an extension? 这根导线不够长，你有延长线吗？ |
| | 4a | plural long pieces of artificial hair that can be fastened to someone’ s hair to make it look longer 假发 | |
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| 5 | C +of something that develops from a particular custom , activity , idea etc （习俗、活动、想法等的）发展，扩展 |
| Business entertainment seems a natural extension of Japan’ s gift-giving culture. 生意上的宴请招待似乎是由日本的送礼文化自然发展而来的。 |
| He sees local history as an extension of family history. 他把地方史看作是家族史的延伸。 |
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| 6 | U technical the action of stretching part of your body （身体某个部分的）伸展 |
| His leg was now capable of full extension. 他的腿现在能够完全伸展开了。 |
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| 7 | singular/U an increase in the power of something （权力的）扩张 |
| +of the further extension of state control 国家控制权的进一步扩张 |
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| 8 | C computing the last part of the name of a computer file For example , ‘EXE’ and ‘DOC’ are extensions. （计算机文件的）扩展名（如EXE和DOC） |
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| 9 | U in the UK, a system in which students can take courses at a university without being full-time students （英国大学为非全日制学生开设课程的）进修部 |
| courses provided through university extension 大学进修部开设的课程 |
| PHRASE |
| - | by extension
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| used for explaining that a particular person or thing is affected by something only because they are connected to what you have just mentioned |
| 自然地；当然地 |
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| She hates all businessmen and, by extension, me. 她恨所有的生意人，当然也包括我。 |
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