arch keystone
基本解释
- 拱顶石
英汉例句
- To effect change means not just replacing the keystone but painstakingly rebuilding the arch.
施行改革并不只是更换一块拱心石，而是要费心费力的重新建立一个拱门。 - A wooden frame built especially to support the sides of an arch until the keystone is positioned.
支拱板条专门用来在拱顶石放置好以前支撑拱的两边木架子。 - Pennsylvania's nickname is the Keystone State. Just as a keystone holds together a stone arch, Pennsylvania was seen as holding together the young American republic.
宾夕法尼亚州的别名是“拱心石之州”。就如拱心石支撑起石拱一样，人们认为宾夕法尼亚支撑起了年轻的美利坚共和国。 - Just as a keystone holds together a stone arch, Pennsylvania was seen as holding together the young American republic.
双语例句
原声例句
专业释义
- 拱顶石