英语词汇arch keystone怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

1
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。
2
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。
3
The keystone in the crown of an arch.
给…盖拱顶给…建造或盖以拱顶；

单词	arch keystone
释义	arch keystone 简明释义拱顶石网络释义 1 [建]?拱顶石 ... 拱顶 arch crown 拱顶石 arch keystone 拱顶贮藏室 vault ... 双语例句 1 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。 2 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。 3 The keystone in the crown of an arch. 给…盖拱顶给…建造或盖以拱顶；
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