The soldiers laboured their way with great difficulty on the marshland.
士兵们在沿泽地上吃力地前进。
2
Therefore the partial landform uplift among the ancient landform highland, the ancient landform slope and the marshland will be most advantageous area belt of the growth of interlayer karst process.
因此古地貌高地、古地貌斜坡与洼地中的局部地貌隆起将是层间岩溶作用发育的最有利区带。
3
The oil that has reached the shore may exacerbate the problem of land loss by poisoning the marsh grasses that hold the delicate coastal sands and silts together.