| 单词 | invalidate |
| 释义 | Word Frequency invalidate(ɪnˈvælɪˌdeɪt) verb (transitive) 1. to render weak or ineffective, as an argument 2. to take away the legal force or effectiveness of; annul, as a contract Derived forms invalidation (inˌvaliˈdation) noun invalidator (inˈvaliˌdator) noun |
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