hole length

例句：

1. 1.The hole in the wall is too small for a child to crawl through.
   墙上的洞太小了，孩子爬不过去。
2. 2.The hole in the wall was filled with water after the rain.
   雨后，墙上的洞被水填满了。
3. 3.The hole in the wall led to a secret room beneath the house.
   墙上的洞通向房子下面的一个秘密房间。