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If an action, procedure, or document is invalid, it cannot be accepted, because it breaks the law or some official rule.
null , false
valid
The trial was stopped and the results declared invalid.
审判被终止了，其结果被宣布无效。
He tried to leave for the Philippines on an invalid passport.
他试图用一本无效护照离境去往菲律宾。
An invalid argument or conclusion is wrong because it is based on a mistake.
We think that those arguments are rendered invalid by the facts.
我们认为那些论点在事实面前站不住脚。
The paper lacked a coherent method and was statistically invalid.
该论文缺乏连贯性且在统计学上站不住脚。
invalids
An invalid is someone who needs to be cared for because they have an illness or disability.
I hate being treated as an invalid.
我讨厌被当作病人对待。
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