At a pace that no urban planner can control, slums spring up in disaster-prone areas-such as steep slopes, which are prone to floods, mudslides or particularly severe damage in an earthquake.

贫民窟的增长速度很快，就连城市规划者都不能控制。而贫民窟往往建在诸如陡坡等灾害多发地带，这些地带更容易遭到洪水、泥石流尤其是地震的破坏。

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