安全问题主要包括认证、访问控制、审计、加密、安全通信和不可否认性。

The security issues include authentication, access control, audition, encryption, safe communication, non-repudiation and so on.

youdao

防止核扩散的紧迫性是不可否认的。

The urgent need for nuclear nonproliferation is undeniable.

youdao

这种关系的协同效应和重要性不可否认。

There is a synergy and an importance to this relationship that cannot be denied.

youdao

不可否认，每一件事物都有其两面性，其实，也不例外。

There is no denying that every thing has one more face and … is no exception.

youdao

健康的重要性是不可否认的。

There is no denying the importance of health.

youdao

不可否认，功利性是它的根本特征。

So undeniably, utilitarian nature is its fundamental character.

youdao

紧迫性是不可否认的。

He did not realize the immediacy of the problem.

youdao

紧迫性是不可否认的。

He did not realize the immediacy of the problem.

youdao