hole pair

例句：

1. 1. The hole in the wall is bigenough for a small dog to fit through.
   墙上的洞足够一只小狗穿过。
2. 2. Theold lady had a gaping mouth whenshe saw the news.
   老妇人看到这条新闻时张大了嘴巴。
3. 3. Thegap between the two countrieshas widened over the years.
   两国之间的差距多年来已经扩大了。