The internal audit department have two functions: the surveillance function and the service function. There is no answer that which function is more important.
内部审计部门有着监督与服务的双重职能，两者孰轻孰重一向都没有一个明确的定论。
Network cameras can be used for the pure surveillance function.
网络摄像头可以用做单纯的监视功能。
Network cameras can be used for the pure surveillance function.
网络摄像头可以用做单纯的监视功能。
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