So, in the language of calculus, x is a function of time and this is a particular function.

所以,从微积分的角度来看,x是一个关于时间的函数,而且是个很特殊的函数

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It's able to do that because there are cells like this particular cell that have shapes that are suited to their function.

之所以这样是因为它的细胞像这个,染色细胞一样具有与功能相适应的外形

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