keystone

From Longman Dictionary of Contemporary EnglishRelated topics: Constructionkeystonekey‧stone /ˈkiːstəʊn $ -stoʊn/ noun 1 TBC[countable] the large central stone in an arch that keeps the other stones in position2 IMPORTANT[singular] formal the most important part of an idea, belief, or process that influences how it developskeystone of The keystone of any personal injury case is medical evidence.Examples from the Corpuskeystone of• A high level of production has become a keystone of economic security.

单词	keystone
释义	keystone From Longman Dictionary of Contemporary EnglishRelated topics: Constructionkeystonekey‧stone /ˈkiːstəʊn $ -stoʊn/ noun 1 TBC[countable] the large central stone in an arch that keeps the other stones in position2 IMPORTANT[singular] formal the most important part of an idea, belief, or process that influences how it developskeystone of The keystone of any personal injury case is medical evidence.Examples from the Corpuskeystone of• A high level of production has become a keystone of economic security.
随便看	single cream single currency single decker single entry book keeping single entry book-keeping single entry bookkeeping single fare single figures single file single handed single handedly single honours single market single minded single occupancy single out single parent single room single room etc single sex college etc single sex school etc single somebody/something ↔ out single sourcing single spacing single ticket