男孩子喜欢打球，比如足球和篮球。

Boys like to play balls, such as football and basketball.

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但是现在我的爱好是体育，比如足球和游泳。

But now, my hobbies are sports, like soccer and swimming. Page.

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到底有多少数学潜伏在日常物品背后是一个出人意料的发现——比如足球。

So it comes as a surprise to discover just how much maths is lurking in everyday objects – such as footballs.

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