| 单词 | invalid |
| 释义 | adjective | noun invalidinvalid1 /ɪnˈvælɪd/ adjective 1a contract, ticket, claim, etc. that is invalid is not legally or officially acceptable OPP valid: Do not detach the coupon or your ticket will be invalid.2reasons, opinions, etc. that are invalid are not based on clear thoughts or facts OPP valid: Ackerman said the argument was invalid.3if something you type into a computer is invalid, the computer does not recognize or accept it OPP valid—invalidity /ˌɪnvəˈlɪdət̮i/ noun [uncountable] adjective | noun invalidinvalid2 /ˈɪnvələd/ noun [countable] someone who cannot take care of himself or herself because of illness, old age, or injury—invalid adjective: her invalid father |
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