revoke的词源

词缀re+voke词源，中文意思是v. 撤回，撤销（桥牌、惠斯特等牌戏中）有牌不跟，n. 有牌不跟

You can only revoke a privilege that was previously granted.只能收回以前授予的权限。

MQM has unlimited access， and you cannot revoke its 拥有未受限制的访问权限，因此您不能回收它的访问权限。