You see, my city is built on porous limestone rock, and the water will just come up through it.

你看，我的城市建在多孔的石灰岩上，水会从这里涌上来。

Rain sinks through the porous limestone down to groundwater levels, and consequently, no river runs through the land.

雨水通过多孔的石灰石下沉到地下水位，因此没有河流流经这片土地。

If you take into account Florida's landscape, it has got a lot of that very porous limestone that allows the rain, the acidic rain to sort of percolate down into the soil forming this cave like sinkholes here.

如果你考虑到佛罗里达的景观, 已经有很多, 有非常多孔石灰岩, 这样雨, 酸性雨水浸透深入到土壤中, 形成就像天坑这种坑洞。