key stone

• 拱石顶

key stone的英文翻译是什么意思，词典释义与在线翻译：

英英释义

名词 keystone:

1. a central cohesive source of support and stability

2. the central building block at the top of an arch or vault

key stone的用法和样例：

例句

1. The root of the big tree trends to edge away the corner stone.
   这棵大树的根可能会把墙角石顶走。