A low, swampy tract of land.

沼泽地。

A swampy grassland especially in southern Florida usually containing saw grass and at least seasonally covered by slowly moving water.

大沼泽地(特别指佛罗里达州南部的大片沼泽，通常有锯齿草丛生，季节性地被流动缓慢的水覆盖)。