Word · CEFR B2 · Frequency #2123
extension
延期；宽限
An agreed extra period of time to finish something or pay a debt.
- 1.
The act of extending; a stretching out; enlargement in length, breadth, or time; an increase.
伸展；延伸；长度、宽度或时间的扩大；增加。
- 2.
a mutually agreed delay in the date set for the completion of a job or payment of a debt
双方商定的完成工作或偿还债务的延期
- 3.
The state of being extended.
被延伸的状态。
- 4.
act of expanding in scope; making more widely available
扩大范围,使更广泛可用
- 5.
That property of a body by which it occupies a portion of space (or time, e.g. "spatiotemporal extension").
物体占据一定空间(或时间)的属性,如“时空延展”。
- 6.
the spreading of something (a belief or practice) into new regions
信仰或实践向新地区的传播
- 7.
A short exact sequence 1→H→E→G→1, or the group E therein.
短正合序列 1→H→E→G→1,或其中的群 E。
- 8.
A short exact sequence 0→B→E→A→0, or the object E therein.
短正合序列 0→B→E→A→0,或其中的对象 E。
- 9.
A part of a building that has been added onto the original.
建筑物增建的部分。
- 10.
An outgrowth; a part of something that extends its capabilities.
衍生物；扩展其功能的部分。
- 11.
Capacity of a concept or general term to include a greater or smaller number of objects; — correlative of intension.
概念或一般术语所包含对象的数量大小；与内涵相对。
- 12.
Semantic widening, broadening of meaning.
语义扩展,词义扩大。
- 13.
A written engagement on the part of a creditor, allowing a debtor further time to pay a debt.
债权人书面同意给债务人延期偿还债务的承诺。
- 14.
The operation of stretching a broken bone so as to bring the fragments into the same straight line.
拉伸骨折处使骨碎片对齐的手术。
- 15.
An exercise in which an arm or leg is straightened against resistance.
一种抵抗阻力伸直手臂或腿部的锻炼。
- 16.
A simple offensive action, consisting of extending the weapon arm forward.
一种简单的进攻动作,将持武器的手臂向前伸出。
- 17.
A numerical code used to indicate a specific telephone in a telecommunication network.
用于标识电信网络中特定电话的数字代码。
- 18.
An optional software component that adds functionality to an application.
为应用程序增加功能的可选软件组件。
- 19.
The set of tuples of values that, used as arguments, satisfy the predicate.
作为参数使用时满足谓词的值元组集合。
- 20.
A kind of derivative morpheme applied to verbs in Bantu languages.
班图语言中应用于动词的一种派生语素。
- 21.
The ideal in the codomain generated by the image of the given ideal under the given homomorphism.
在给定同态下由给定理想的像生成的陪域理想。
- 22.
University programs that are targeted at the broader (usually adults) community whose participants are not full-time enrolled students.
面向更广泛(通常为成人)社区、参与者非全日制注册学生的大学课程。
扩建部分；增建部分；伸展；延伸；扩展；扩大；推广；传播；附加部分；扩展部分；广延；时空延展
In use
They built an extension to the kitchen to create more space.
The professor gave us a one-week extension on the essay deadline.
Please dial my extension number when you call the office.
they applied for an extension of the loan
extension of the program to all in need
extension of sth
表示时间或范围的延长。
They requested an extension of the deadline.
他们要求延长截止日期。
extension to sth
表示建筑物或结构的扩建。
We built an extension to the kitchen.
Connections
Collocations
- file an extension
- 申请延期
- We need to file an extension for the project deadline.我们需要为项目截止日期申请延期。
- grant an extension
- 批准延期
- The professor granted him a one-week extension for the paper.教授批准了他论文一周的延期。
- extension of time
- 时间延长
- The contractor asked for an extension of time due to bad weather.承包商因恶劣天气要求延长时间。
- building extension
- 建筑扩建
- They are planning a building extension to add more classrooms.他们计划进行建筑扩建以增加更多教室。
- extension of contract
- 合同延期
- Both parties agreed to an extension of contract for another year.双方同意将合同再延期一年。
- extension cord
Learner notes
Memory Tip
联想“extend（延伸）+ sion”，像是把东西拉长，就是extension（延长、扩展）。
Context & Register
通常用于建筑领域，指房屋或建筑物的扩建部分，比较正式，常见于房地产或建筑工程中。
Grammar Note
常与of或to连用，表示‘…的延伸’或‘对…的扩展’。
Pronunciation & Spelling
Words ending in -ension (stressed /-ɛnʃən/) rhyme: attention, intention, dimension, comprehension, suspension. Beware of -ensive words like extensive (/-ɛnsɪv/) which look similar but sound different.
High-value vocabulary
该词属于 Oxford 核心词汇，值得优先掌握常见搭配和句型。
Usage priority
Collins 词频等级为 2，建议结合例句记忆，而不是只背中文释义。
Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from AI_FALLBACK, DICTIONARY_API_DEV, ECDICT, WIKTIONARY.