consisting of deep, wet, sticky earth that is difficult to move through

The meadows between the village and the churchyard were wet and miry. 村庄和教堂墓地之间的草地很湿，泥泞不堪。

The road was so miry that the horse had hard work to get through. 路上泥泞不堪，那匹马费了很大劲才过去。