The four levels of rooms center on a beautiful courtyard with a glass ceiling to let light shine in.
VOA: special.2009.01.11
Let's say you have to go through three or four operations to get a final number, well, do it algebraically.
让我们说,你不得不通过3-4个操作,才能得到最终的数,好吧,用代数方法求解。
Well, I'm going to get back, let's just draw a bigger square than usual that's roughly four times the size.
嗯,返回的是,我画一个更大的方形,大致上是4倍的大小。
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