round foramen

• 圆孔

round foramen的用法和样例：

例句

1. At the right is a probe patent foramen ovale in an adult.
   右为成年人卵圆孔未闭的探查。
2. European peasants would insert a wooden drill in a round hole and rotate it briskly between their palms.
   欧洲的农夫将一个木钻子放入一个圆孔并用手掌不停旋转它。