在多因素身份验证中，使用多种检验机制检查身份的真实性。

In multifactor authentication, the authenticity of an identity is verified and validated using more than one validation mechanism.

youdao

经过详尽的检查，确信其真实性没有问题。

We checked in detail and convinced ourselves there was no problem.

youdao

似乎像是个问题，保证/检查的真实性。

Seems like that would be more of a problem for guaranteeing/checking authenticity.

youdao