另一方面，您要将程序位置存储在系统树中，因为位置对于所有用户是相同的，并且所有用户都可能用到它。
On the other hand, you would store the location of a program in the system tree, as that location is the same for all users and is potentially useful to all users.
我猜想他们这样设计是方便你们在树底放更多的礼物，另一方面，这样也便于宠物紧紧挂住圣诞树、便于小孩爬上去。
I guess they were designed so that you could place more presents at the bottom. It also has the side effects of being harder for pets and kids to climb up on.
另一方面，每次用户点击树的一个节点，我们都用数据网格控制来罗列节点下的所有服务。
On the other hand, every time a user clicks one node of the tree, we will have a datagrid control to list all the services under this node.
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