invalid

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 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.
   1. I hate being treated as an invalid.
      我讨厌被人当作伤病号对待。
2. ADJ 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.
   1. The trial was stopped and the results declared invalid...
      审判被中止,判决结果被宣布无效。
   2. We cannot accept liability if you are refused entry because of invalid documents.
      如果你因证件无效被拒入内,我们不承担责任。
3. ADJ (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.
   1. We think that those arguments are rendered invalid by the hard facts on the ground.
      我们认为那些论点当场即被确凿的事实驳倒了。

adj.

1. （法律上或官方）不承认的；无效的
   not legally or officially acceptable
   1. The treaty was declared invalid because it had not been ratified.
      条约没有得到批准，因此被宣布无效。
   2. People with invalid papers are deported to another country.
      持无效证件的人被驱逐到别国。
2. 无充分事实的；站不住脚的
   not based on all the facts, and therefore not correct
   1. an invalid argument
      站不住脚的论点
3. 不能识别的；无效的
   of a type that the computer cannot recognize
   1. An error code will be displayed if any invalid information has been entered.
      输入了无效信息将显示错误代码。
   2. invalid characters
      无效字符

noun

1. 病弱者；久病衰弱者
   a person who needs other people to take care of them, because of illness that they have had for a long time
   1. She had been a delicate child and her parents had treated her as an invalid.
      她小时候很虚弱，父母就把她当个病人照料。
   2. his invalid wife
      他的体弱多病的妻子

verb

1. （因伤病）令…退役
   to force sb to leave the armed forces because of an illness or injury
   1. He was invalided out of the army in 1943.
      他于1943年因伤病退役。