invalidity发音名词1无效、失效正式The court confirmed the invalidity of the contract signed last year.法院确认去年签署的那份契约无效。2不成立、站不住脚She pointed out the invalidity of his argument in three sentences.她用三句话指出他的论点站不住脚。3伤病、失能英式He has received an invalidity pension since the accident.自那场意外后,他一直领取伤病年金。用这个字练口说→