The noun is pronounced /'ɪnvəlɪd/. The adjective is pronounced /ɪn'vælɪd/ and is hyphenated in|val|id. 名词读作 /'ɪnvəlɪd/。形容词读作 /ɪn'vælɪd/,分音节为in|val|id。
1
[N-COUNT 可数名词]病人;病弱者;伤残者 An
invalid is someone who needs to be cared for because they have an illness or disability.
2
[ADJ 形容词]无效的;作废的 If an action, procedure, or document is
invalid, it cannot be accepted, because it breaks the law or some official rule.
3
[ADJ 形容词](论据、结论)站不住脚的,错误的 An
invalid argument or conclusion is wrong because it is based on a mistake.