Then we'll watch George try to tackle his presents as he tries to unwrap them.
然后我们会看乔治怎么打开他的那些圣诞礼物。
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。
The elves looked at each other in surprise. Then they realised that the presents were for them, and they laughed and began to unwrap the packages.
小精灵惊讶的互相看了看。然后，他们意识到礼物是送给他们的，他们笑了，开始打开包装。
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