pit pair

例句：

1. 1. The dog was digging in the dirtto find a hidden treasure.
   狗在挖土寻找隐藏的宝藏。
2. 2. The carwas parked in adeep pit, and I hadto crawl out of it.
   汽车停在一个很深的坑里，我不得不爬出来。
3. 3. The oldhouse had several large holes inits walls, which needed to berepaired.
   这所老房子的墙上有几个大洞，需要修补。