keystone

美 [ˈkiˌstoʊn]
英 [ˈkiːˌstəʊn]
  • n.拱顶石;基础
  • adj.吉斯通式的
  • 网络拱心石;凯斯通;重点
复数:keystones  
Keystone
n.
1.
拱顶石the central stone at the top of an arch that keeps all the other stones in position
2.
[ususing]
(计划、论据的)主旨,基础the most important part of a plan or argument that the other parts depend on

例句

释义:
类别:全部全部,口语口语,书面语书面语,标题标题,技术技术
来源:全部全部,字典字典,网络网络
难度:全部全部,简单简单,中等中等,