foramen rotundum

例句：

1. 1. This rock has a foramen rotundum that is perfect for drilling.
   这块岩石有一个完美的圆形孔，非常适合钻孔。
2. 2. The ancient temple was built with foramen rotundums that were used to store water.
   这座古庙是用圆形孔来储存水的。
3. 3.The scientist discovered a foramen rotundum in the rock that could be used as a new source of energy.
   这位科学家在岩石中发现了一个新的圆形孔，可以作为新的能源来源。