mire，morass，quagmire，lair ；

[例句] 他的人民在混乱不安的泥潭里越陷越深。 His people had fallen further and further into a quagmire of confusion.

[例句] 轮子在泥潭中陷得更深了。 The wheels sank deeper into the mire.

air pocket，airhole ；

[例句] 它陷入了压缩空的气潭. It was hitting pockets of compressed air.