重点讲解：
1. aim to do sth. 致力于；旨在；以…为目标；
例句：We aim to help disabled students to live and study independently.
我们旨在帮助残疾学生尽可能独立地生活和学习R^IPw9ea5I-S-%O。
2. churn out 快速生产；大量生产；
例句：He began to churn out literary compositions in English.
他开始用英文创作大量的文学作品y8#5huiFf21RkeTDjM*。
3. phase out 逐步淘汰；逐步放弃；
例句：The old machinery here will be phased out.
这里的旧机器将逐步淘汰_fI(Df|ME9YO。
4. fail to do sth. 失败；未能够；未做成；
例句：For one reason or another, business between us have fail to develop.
由于种种原因，我们之间的业务未能发展下去kxvEfi%v(-zFN!h。
5. close down （工厂、商店、学校等）永久性关闭；（使）停业；（使）倒闭；
例句：The company had decide to close down its three branch in europe.
该公司已决定关闭它在欧洲的三个分公司.iZbI%Udtyed@F4P。