1
expansion of [noun]
表示扩展的对象，后接被扩展的事物。
The expansion of the company's operations led to increased profits.
公司业务的扩展带来了利润的增长。
扩大；扩充；扩张
先理解核心含义，再看它在真实句子里的用法。
扩大；扩充；扩张
the act of increasing something in size, volume, quantity, or scope
The expansion of the company's operations led to increased profits.
公司业务的扩展带来了利润的增长。
扩大、扩张或展开的行为、过程或事例。
An act, process, or instance of expanding.
扩大尺寸、体积、数量或范围的行为
the act of increasing (something) in size or volume or quantity or scope
表示为项的和或积的函数
a function expressed as a sum or product of terms
提供额外信息的讨论
a discussion that provides additional information
The company's expansion into Asian markets was carefully planned.
公司向亚洲市场的扩张是经过仔细规划的。
AI contextual example
The expansion of the city has caused traffic problems.
城市的扩张导致了交通问题。
AI contextual example
Heat causes the expansion of metal.
热会导致金属膨胀。
AI contextual example
the expansion of (a+b)^2 is a^2 + 2ab + b^2
(a+b)^2 的展开式为 a^2 + 2ab + b^2
WordNet
表示扩展的对象，后接被扩展的事物。
The expansion of the company's operations led to increased profits.
公司业务的扩展带来了利润的增长。
表示扩展进入新的领域或地区。
The brand is planning an expansion into the Asian market.
该品牌正计划向亚洲市场扩展。
表示经历扩展的过程。
The city underwent rapid expansion during the last decade.
这座城市在过去十年经历了快速扩张。
Not this
Company expansion is rapid.
Use this
The company's expansion is rapid.
英语中，可数名词 expansion 前需要限定词（如冠词、所有格），尤其是当名词后有修饰时。
Not this
We need to expansion our market.
Use this
We need to expand our market.
expansion 是名词，不能直接用作动词，应改为动词 expand。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
经济扩张
The country experienced rapid economic expansion in the 1990s.
该国在1990年代经历了快速的经济扩张。
迅速扩张
The company's rapid expansion led to hiring many new employees.
公司的迅速扩张导致雇佣了许多新员工。
业务扩张
They are planning a major business expansion into Asian markets.
他们正计划大规模业务扩张进入亚洲市场。
扩张计划
The board approved the expansion plan for the next fiscal year.
董事会批准了下一个财政年度的扩张计划。
市场扩张
The company's market expansion strategy focused on emerging economies.
公司的市场扩张策略聚焦于新兴经济体。
领土扩张
The empire's territorial expansion was fueled by military conquests.
帝国的领土扩张是由军事征服推动的。
Use expansion naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
把'ex'想成'向外'，'pan'想成'平铺'，联想气球向外膨胀扩大。
语域：mixed 常见场景：business and economics、computing、general 通常用于商业、经济、科技等领域，根据语境不同，正式程度有所变化。
通常不可数，但指具体实例时可数；后常接of/in/to
Dictionary facts from DICTIONARY_API_DEV, ECDICT, WIKTIONARY.