OK? So you can see that, it's just walking through it, and in fact if I look at a couple of another-- another couple of examples, it's been a long day, again, you can see that property.

恩，其实你能看到,他就是遍历列表，你要有空的话,可以再看很多很多其他的例子,你能够看到这个属性。

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It's been a long day.

今天真是漫长的一天。

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Maybe you have been inside all day long when a friend comes from outside.

假设你已经室内待了一天了，这时一个朋友从外面回来了。

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