说明：  我们在使用《金山词霸》时发现，在《金山词霸》已经运行了的情况下，再次点击《金山词霸》的图标，那么它不会再运行另外一个《金山词霸》，而是将已有的《金山词霸》给激活，始终只能运行一个《金山词霸》的实例。
(we use "free email" found that the "free email" has been running the circumstances, again click on "free email" icon, then it will not run another one "free email", but would have a "free email" to activate, and always run only a "free email" examples.)