The CA certificate has expired and the certificate must be re-issued with an unexpired date.
CA 证书已过期，必须重新发布未过期的证书。
Attention should be taken quite often to check the expired date indicated on your passport, Residence Card and your visa.
持证人必须经常注意检查自己的护照，居留证，签证的有效期。
If the date the content is viewed is before the date given, that content is deemed not expired and will draw from the cache.
如果查看内容时的日期在给定的日期之前，则认为该内容没有失效并从缓存中提取出来。
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