| 词汇 | keystone |
| 释义 | keystone noun[ C ] uk /ˈkiː.stəʊn/ us /ˈkiː.stoʊn/ keystonenoun[C] (STONE)architecture specialized the middle stone in the top of an arch that has a special shape and holds all the other stones in position拱顶石;塞缝石 ben-bryant/iStock/Getty Images Plus/GettyImages Parts of buildings: arches, columns & beams abutment arch architrave archway beam beamy capital colonnade Corinthian Doric ionic joist pedestal portico soffit torus vault vaulted vaulting keystonenoun[C] (IMPORTANT PART)the most important part of a plan, idea, etc. on which everything else depends（计划、想法等的）基础，主旨，基本原则 Important and essential things -based amenity at the core of something bare be-all focal point foreground foundation stone fulcrum fundament grandaddy heavyweight imperative need nexus nitty-gritty nub nucleus the grandaddy of somethingidiom the name of the gameidiom keystone | Business Englishkeystone noun[ C ] uk /ˈkiːstəʊn/us the most important part of a plan, idea, etc. on which everything else depends: Selling overseas has been, and always will remain, one of the keystones of our national prosperity. A keystone of its corporate strategy is to invest in people, technology, and training to create a brand. Examples of keystonekeystone In this process, users get immediate information as to frequency, context and usage: three keystones to lexicography. The keystones are richly carved and the arch soffit is deeply coffered and enriched. Flagships, umbrellas, and keystones: is single-species management pass' in the e landscape era? The assumption that "consent" is the source of a government's legitimacy represents a conceptual keystone in liberal theory. Thus, this sector has been identified as a keystone for agricultural development in these developing nations. However, those treatments containing high proportions of alfalfa also attracted higher numbers of herbivorous keystone species. In this paper the concept of keystone plant resources is reviewed using potential candidates proposed in the literature for neotropical forest sites. Such research should concentrate on the regeneration after fire and the modes of establishment of keystone species. The importance of this species as a potential keystone resource for the frugivore community is discussed. The doctrine taught in them is that the irresistible development of democracy is the keystone of the modern situation. The resection of the outlet septum is the keystone of the technique. The keystone concept also may be applied to many trematodes in their roles as indicator species. In this sense then, molluscs can be considered as keystone species for digenetic trematodes. The keystone of his work not only in economics but also in political and legal theory is the idea of" spontaneous order". The keystone species concept: variation in interaction strength in a rocky intertidal habitat. See all examples of keystone These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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