They could not move their heavy mortars over the swampy ground.
他们无法把重型迫击炮移过那片沼泽地。
However, the swampy terrain was a breeding ground for mosquitoes, which carried a variety of diseases - dysentery, malaria, smallpox - that the English were unaccustomed to.
然而，这里的沼泽地形滋生了大量的蚊子，成了携带了多种疾病的温床：痢疾，疟疾，天花。英国无法适应这样的环境。
However, the swampy terrain was a breeding ground for mosquitoes, which carried a variety of diseases - dysentery, malaria, smallpox - that the English were unaccustomed to.
然而，这里的沼泽地形滋生了大量的蚊子，成了携带了多种疾病的温床：痢疾，疟疾，天花。英国无法适应这样的环境。
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