Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
权限中,一般什么时候用到继承……
Eg.经理继承员工,那么经理就有员工的权限,然后经理再添加自己特殊的权限。