森林中有厚厚的一层树叶，它们是非常容易着火的。
There is a thick covering of leaves in the forest, which are very easy to catch fire.
然而，没有避雷针，这宫殿的屋顶是很容易着火的。
However, without lightning rods, the palace roof would easily catch fire.
为什么不将让那么多穷人生活破灭的窝棚换掉，一起从容易坍塌和着火的纸板和泥泞中搬出来，取而代之以更加经久耐用的建筑？
Why not replace the shacks that blight the lives of so many poor people, thrown together out of cardboard and mud, and prone to collapsing or catching fire, with more durable structures?
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