形容词weakineffectivevoidfraildebilitatedunhealthyinfirmsickly

形容词strongtough

1. He helps to look after his grandfather who is an invalid.
    他帮助照看他病弱的祖父。

1. 无效：MOESI协议由6个状态组成,这些状态说明如下:无效(Invalid) 在无效状态的Cache行不能持有数据的有效拷贝. 数据的有效拷贝可能在主内存或其他处理器的Cache中. 独占(Exclusive) 在独占状态的Cache行持有数据最近的和正确的拷贝.

2. 无效的：客户将提供它的证书给服务,并且必须(MUST)服务必须(MUST)验证客户的证书是有效的. 服务将通常检查证书是被已知的CA签发的,以及在客户的证书链中没有哪个证书是无效的(invalid)和被撤销(revoked). 服务做这些

3. 非法：不久之前,TomTom为此吃了苦头,只得向微软妥协了事. Tridgell想了一个办法,其实很简单,把一个长文件名转化为11个非法(invalid)字符组成的字符串从而躲过操作系统(被操作系统所忽视),此想法确实很妙也.

1. 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.

invalid的近义词

    e.g. I hate being treated as an invalid.
           我讨厌被人当作伤病号对待。

2. 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.

    e.g. The trial was stopped and the results declared invalid...
           审判被中止,判决结果被宣布无效。
    e.g. 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. (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.

invalid什么意思

    e.g. 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。

1. someone who is incapacitated by a chronic illness or injury

    Synonym: shut-in

1. injure permanently

    e.g. He was disabled in a car accident

    Synonym: disableincapacitatehandicap

2. force to retire, remove from active duty, as of firemen

1. no longer valid

    e.g. the license is invalid

2. having no cogency or legal force

    e.g. invalid reasoning
           an invalid driver''s license