Role switching involves transferring the principal role to the mirror server. 角色切换涉及将主体角色转换给镜像服务器的操作。
When on international duty, Rooney seemed to struggle to switch from that understudy's role and become the rampaging force of nature he was as a teenager. 大国家队的时候，鲁尼看上去很难从配角的角色转换过来回到自己以前的那种风格。
