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- 2025-07-28
- 2025-07-28
“keystone”的英英意思
单词 keystone 释义 ▪ I. keystone, n.|kistn|1. a. The stone at the summit of an arch, which, being the last put in, is looked upon as locking the whole together.a1637B. Jonson Underwoods, Misc. Poems xxx. To Sir E. Sackville, 'Tis the last key-stone That...
2025-07-28
“keystone”的意思
单词 keystone 释义 keystone n 1 (architecture 建) central stone at the top of an arch locking the others into position 拱顶石. 2 (usu sing 通常作单数) (fig 比喻) most important part of a plan, an argument, etc on which all the other parts depend （计划、...
2025-07-28