Imagine how long it would take if you had a large set of domain objects and you implicitly selected from the top object class.
假设如果你有一大堆领域对象，你从最上层的Object类进行隐式选择查询，那该需要多长时间啊！
We made a measurement in class how long it took, so you know the time and so you can come up with a value for g.
以前课上测量过需要的时间，因此时间也知道了，这样g的值就可以求出来了。
We made a measurement in class how long it took, so you know the time and so you can come up with a value for g.
以前课上测量过需要的时间，因此时间也知道了，这样g的值就可以求出来了。
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