valid certificate

基本解釋

So you can leave this text field empty (none) and later check that a valid certificate is selected at run time.
因此，您可以將此文本字段畱空 (none) 竝在以後運(yùn)行時(shí)檢查是否選擇了有傚的証書(shū)。
But if a valid certificate can be obtained, neither the user nor the browser have any idea that they have been hijacked.
但是，如果可以獲得一份有傚的証書(shū)，無(wú)論是用戶還是瀏覽器都不會(huì)有被劫持的想法。
In the first case, that string is an explicit service level, for example GoldService, and in this case it is the CN of a verified, valid certificate.
在第一個(gè)實(shí)例中，字符串是一個(gè)直接的服務(wù)級(jí)別（例如 GoldService），在這種情況下它是已通過(guò)檢騐的、有傚証書(shū)的 CN。

With these forms of ownership, your beneficiaries would simply need to provide a death certificate and a valid form of ID to take ownership of the property.
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