如果不能确认证书是可信任的，那么openssl会将证书标记为无效(但连接仍可以继续)。
If the certificate cannot be verified for trust, OpenSSL flags the certificate as invalid (but the connection can still continue).
同样，在回放期间，如果并不能确保相同的对象状态，那么确认点将会失败。
Also, during playback, if the same object state is not ensured, then the verification point will fail.
如果他们不能确认是岛，则领土声明是无效的。
If they're not islands, then territorial claims don't apply.
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