Keystone
[ ['ki:stəun] ]
大学 College
n. 拱顶石, 楔石, 重点
✅ 同义词
📖 牛津释义
keystone
n
1 (architecture 建) central stone at the top of an arch locking the others into position 拱顶石.
2 (usu sing 通常作单数) (fig 比喻) most important part of a plan, an argument, etc on which all the other parts depend （计划、 论据等的）基础, 主旨
Belief in a life after death is the keystone of her religious faith. 她的宗教信仰的基础是相信死後有来生. Cf 参看 corner-stone (corner1).
🗣️ 情景例句
Not a bad idea, Robbie.
蛮好的主意， Robbie。
This part of the country is very mountainous.
国家的这部分有很多的山。
Yes. We've just heard a warning on the radio that a hurricane is likely to come.
是的，我们刚从广播里听到一则气象警报，说是一场飓风可能要到来。