The first way is just to turn the crank on the math, and the second way is to do a little bit more imaginative about the process.
第一个方法就是纯数学推导,第二个方法我们将对,这个过程做一些物理图像的想象。
OK, and you can see that this thing ought to unwrap, it's going to keep extending out those multiplications until gets down to the base case, going to collapse them all together.
好,你可以看到这种方法,是怎么解决的,他一层层的将乘法展开一直到最底层,然后将他们一起乘起来。
It's not about marriage, and marriage will still seem quite a ways off, I fear, when you read Lycidas, but we will be marking the transition to the poetry of marriage soon enough.
那不是讲婚姻的,我担心当你们读《利西亚斯》的时候,婚姻仍是一个走出的方法,但是我们,将很快标记诗篇中关于婚姻的转变。
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