arch stone

• 楔形砖,拱石

arch stone的用法和样例：

例句

1. An arch with mutually supporting voussoirs that has a straight horizontal extrados and intrados.
   有水平拱背和水平的内弧面的互相支撑的拱石的拱。
2. I felt the stone of the archway and believed that it symbolized the noble, the strong and the masculine -- a fist and a towering exclamation mark!
   我抚摸着北拱石，我以为这块石头是高贵的，坚强的，是一个阳具，是一个拳头，是一个冲天的惊叹号。