английски | Български |
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keystone [keystones] (something on which other things depend for support) noun [UK: ˈkiː.stəʊn] [US: ˈkiːˌstoʊn] | крайъгълен камъкnoun |
keystone [keystones] (the top stone of an arch) noun [UK: ˈkiː.stəʊn] [US: ˈkiːˌstoʊn] | ключnoun |