顺便提一下，某种意义上来讲，这就是拓扑学的起点，拓扑学是研究区域形状的一个数学分支。
And by the way, I mean, this is also somehow the starting point of topology, which is the branch of math that studies the shapes of regions.
就我看来，这就像用数学的扭结理论或者拓扑学来论证你许愿时交叉手指一样困难。
It kind of seems to me to be at the same level as using mathematical knot theory or topology to justify crossing your fingers when you're making a wish.
在这些日子里，拓扑这个天使和抽象代数这个魔鬼为各自占有每一块数学领域而斗争着。
Hermann Weyl In these days the angel of topology and the devil of abstract algebra fight for the soul of each individual matehmatical domain.
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