为了演示名称空间对以后查询的影响，我特意以不同方式使用名称空间。
I've purposefully included diverse examples of namespace usage to illustrate the impact these namespaces will have on subsequent queries.
利奥：这是因为它是以急件方式处理的，而且还是在假日。不过如果您需要的话，我可以查询一下这笔费用。
Leo: it was cleaned at very short notice and on a holiday. However, I can query it if you like.
我目前的解决方案需要大约300毫秒来运行查询并在增加的负载，所以我试图找出一个更好的方式去做。
My current solution takes about 300 ms to run the query and is struggling under increased load, so I am trying to figure out a better way to do it.
我目前的解决方案需要大约300毫秒来运行查询并在增加的负载，所以我试图找出一个更好的方式去做。
My current solution takes about 300 ms to run the query and is struggling under increased load, so I am trying to figure out a better way to do it.
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