quag

After heavy rain, the field became a quag, and we had to walk carefully to avoid sinking.

大雨过后，那片田地变成了泥塘，我们得小心走以免陷下去。

The hikers struggled through the quag, pulling their boots out of the mud with each step.

徒步者们在泥沼中艰难前行，每走一步都要把靴子从泥里拔出来。

We avoided the quag at the edge of the marsh, knowing the ground would not hold our weight.

我们避开了沼泽边缘的泥塘，因为知道那里的地面承受不住我们的重量。