keystones is keystone's Plural Form

keystone

US [ˈkiˌstoʊn]
UK [ˈkiːˌstəʊn]
  • adj.吉斯通式的
  • Web重点;关键点;建设者
Plural Form:keystones  
adj.
1.
吉斯通式的
na.
1.
要旨,根本原理
2.
拱顶石,冠石,塞缝石
3.
【无线】梯形失真(光栅)

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard