1·IBM managed to do it with the transition from mainframes to PCs, by firewalling the businesses in entirely different geographies.
IBM成功了，是因为通过将其不同的业务封闭在完全不同的地域运行从而完成了由大型主机向个人电脑的转型。
2·For example, an enterprise may have legacy systems or mainframes that need to be integrated into the existing synchronization environment.
例如，一个企业可能拥有一个遗留系统或者大型主机需要整合到现有的同步环境中。