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TOEFL BNC: 14319 COCA: 14552

invalidate

1 ENTRIES FOUND:
invalidate /ɪnˈvæləˌdeɪt/ verb
invalidates; invalidated; invalidating
invalidate
/ɪnˈvæləˌdeɪt/
verb
invalidates; invalidated; invalidating
Learner's definition of INVALIDATE
[+ object]
: to make (something) invalid使无效: such as
: to weaken or destroy the effect of (something)削弱效果;使无效
: to show or prove (something) to be false or incorrect证明…错误

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