Usage control model is a new access control model proposed nearly, it defines the framework of modern access control mod-el systematically and semantically.

使用控制模型是最近才提出的新型访问控制模型，它系统全面地定义了现代访问控制模型的框架。

youdao

But the MoD said last year that it had access to "a range of international bases which allow us to project our air power around the world".

BBC: HMS Ark Royal sold for scrap by Ministry of Defence

Rather than just make games, said Mr Elliott, Valve also let players become creators by giving them access to tools that let them modify or "mod" the studio's creations.

BBC: Valve boss Gabe Newell awarded Bafta fellowship