One indicator could be changes in the exit and entry rates in a particular industry.
在特定行业里，这种指标的进入率和离开率应是可变的。
Since he purchased the game from you, you have updated the directory record entry created when he registered with an indicator of the free usage he's entitled to.
当他购买游戏时，游戏商使用Ken可以免费游戏的标记更新在他注册时创建的目录记录。
Since he purchased the game from you, you have updated the directory record entry created when he registered with an indicator of the free usage he's entitled to.
当他购买游戏时，游戏商使用Ken可以免费游戏的标记更新在他注册时创建的目录记录。
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