What's variable about them is that they bind to a specific antigen.

它们可变的原因是,它们需要结合不同的抗原

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Well, unfortunately in C, you have to be ever so specific as to what you wanna put in the variable.

很不幸，在C语言里，给变量赋值之前,你必须搞清楚它的数据类型。

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