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1·He introduced a project for slum clearance.

他提出一个清除贫民窟的计划。

2·Why not cure unemployment by a national slum clearance effort?

何不通过全国性的消除贫民窟运动来解决失业问题呢？

3·Among the herculean tasks confronting large cities are slum clearance and traffic control.

大城市所面临的极困难的工作之一，就是清除贫民窟和控制交通。

4·It leads to even worse policies in the cities of Asia, Africa, and South America, to slum-clearance projects in which the futures of tens or hundreds of thousands of people are recklessly erased.

在亚洲，非洲和南美，一些城市政策则更是恶劣，清理棚户区的项目，让成百上千，甚至成千上万人们的未来被无情的清除。