We can do that sort of: When you play tic-tac-toe with your seven-year old nephew or niece, you just look ahead and work backwards.

我们可能会这么做,当你和你七岁大的侄子或侄女,下三子棋的时候,你就会先预测,然后想

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which you'll think, only a ten or eleven year old, but when there is thirteen of them, it's a lot.

你会想，不就是十岁、十一岁的小孩嘛，但有十三个还是很多的。

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