Apedia

Keystone Noun Stone Important Part ˈkiːstəʊn N Count 可数名词

word keystone
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WDF

keystone

[ˈki:stəʊn]

n21257
963
26
128
269
297
243
NOUN11892
39248

Spoken:

19369518
重点(70%),拱顶石(18%),基础(12%)
n.主旨,基本原则;[建] 楔石
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Collins
keystone
/ki͟ːstoʊn/
1
[N-COUNT 可数名词]拱顶石 A keystone is a stone at the top of an arch, which keeps the other stones in place by its weight and position.
  [TECHNICAL 术语]
    2
    [N-COUNT 可数名词](政策、体系或进程的)基础,主旨 A keystone of a policy, system, or process is an important part of it, which is the basis for later developments.
      [usu sing]
    • Keeping inflation low is the keystone of their economic policy.

      将通货膨胀率保持在较低水平是他们经济政策的主旨。


    Oxford
    key·stone / ˈkiːstəʊn ; NAmE ˈkiːstoʊn / noun 1 ( architecture ) the central stone at the top of an archthat keeps all the other stones in position 拱顶石 2 [usually singular ] the most important part of a plan or argument that the other parts depend on (计划、论据的)主旨,基础 keystone keystones key·stone / ˈkiːstəʊn ; NAmE ˈkiːstoʊn /
    LDC
    keystonekey‧stone /ˈkiːstəʊn $ -stoʊn/ noun
    word sets
    1[countable] the large central stone in an arch that keeps the other stones in position2[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.

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