But that would get very boring, so rather than do that, let's draw a picture.
不过这样做会很枯燥,与其一个一个地算,不如我们画张图吧
Let's just draw a picture of that; we'll come back to this in a minute.
我先画出图像,一会再细说
Let's draw a little picture on the side here.
我们在边上简单地画个图来看看吧
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