| 单词 | keystone |
| 释义 | keystone (kiːstoʊn ) Word forms: keystones 1. countable noun A keystone is a stone at the top of an arch, which keeps the other stones in place by its weight and position. [technical] 2. countable noun [usually singular] A keystone of a policy, system, or process is an important part of it, which is the basis for later developments. Keeping inflation low is the keystone of their economic policy. [+ of/in] Synonyms: basis, principle, core, crux Translations: Chinese: 基础 Japanese: 基本原理 |
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