核心词议：
n. 膨胀；阐述；扩张物
expansion 基本解释
n. 扩大；扩张；扩张物；膨胀物
速记方法
速记技巧 词根词缀法 拆 词根ex向外的，pand谐音胖的 记 向外胖的，扩大，膨胀。sion名词后缀，表示膨胀的名词。
知识扩展
重要短语
thermal expansion 热膨胀
business expansion 业务扩张，营业扩充
expansion coefficient 膨胀系数
expansion joint 伸缩缝；补偿器
expansion 变化形式
复数： expansions
中文词源： expansion
精选例句
1、 “From the infinity small to the infinity large, contraction and expansion coming in and out of focus: amazing Flemish accuracy and the showy Baroque of old painting that he used in his museum-theatre in Figueras,” explains the Pompidou Centre.
蓬皮杜中心解释说:“从无限小到无限大，收缩和扩张在焦点上进进出出:令人惊叹的佛兰德式准确性和他在菲格拉斯博物馆-剧院中使用的巴洛克式老式绘画。”
2、 “From the infinity small to the infinity large, contraction and expansion coming in and out of focus: amazing Flemish accuracy and the showy Baroque of old painting that he used in his museum-theatre in Figueras,” explains the Pompidou Centre.
蓬皮杜艺术中心解释说:“从无限小到无限大，收缩和扩张在焦点上出现和消失:令人惊叹的佛兰德式精确和炫目的巴洛克式老画，他在菲古拉斯的博物馆-剧院中使用了这种风格。”[机器自动翻译，如有错误，感谢纠错]
1、 B)But as income inequality rises to record levels in the United States, even in the midst of a record economic expansion, those familiar images are outdated,hurtful, and counterproductive to focusing attention on solutions and building ladders of opportunity.
但是，随着美国的收入不平等上升到创纪录的水平，即使在创纪录的经济扩张中，那些熟悉的形象已经过时了，有害的，而且会适得其反，无法将注意力集中在解决方案和建立机会的阶梯上。
1、 Chinese officials say the expansion in Antarctica prioritises scientific research, but they also acknowledge that concerns about ""resource security"" influence their moves.
中国官员表示，在南极洲的扩张优先考虑的是科学研究，但他们也承认，对“资源安全”的担忧影响了他们的行动。
1、 The report also advocates greater study of foreign languages, international affairs and the expansion of study abroad programs.
该报告还提倡更多地学习外语、国际事务和扩大海外留学项目。
常见考点例句：
- A reading above 50 indicates expansion .
- 指数超过50即表示扩张。
- Work on volcan 's expansion plan has slowed .
- volcan公司因此减缓了其扩展计划。
- We have got used to expansion and dominance .
- 我们必须习惯资源的膨胀和支配。
- That leaves a fair amount of room for expansion .
- 这为扩大范围留下了相当数量的空间。
- But by itself expansion will not have done much .
- 但是依靠它自己的发展并不能做太多。
