nigua

例句：

1. 1.The workers were digging in the mud to find the lost treasure.
   工人们正在泥泞中挖掘寻找失落的宝藏。
2. 2. The river flows through a muddy area.
   这条河流经一片泥泞地带。
3. 3. The car was stuck in the mud and couldn't move.
   汽车陷在泥里出不来了。