穹

• The absence of the fetal cranial vault in anencephaly is shown here
  无脑儿显示胎儿颅穹窿缺陷。
• The half dome over an apse
  穹内半圆顶教堂后部的半圆形穹顶
• Planar lens or round meeting
  圆穹型或平面透镜
• Pars libera column fornicis
  穹窿柱独立部
• Imperial vault of heaven the place was used to keep wooden tablets for worship
  皇穹宇是专门安放神牌的殿宇，俗称寝宫。
• However , anything inside the inner event horizon can never escape
  内事件穹界才是真正的死亡线，一旦进入便永无翻身之日。
• Pars tecta column fornicis
  穹窿柱掩辄
• Outside the event horizon , there is a sphere which light can orbit around the black hole
  在事件穹界之外，有一个称为光子球层
• Isthmus gyri fornicati
  穹窿?峡
• You are told that once something enters the event horizon , it can never get out
  ：到目前为止，我们不断强调事件穹界是一条不归路。