Similarly, in a chemical formula the subscript comes after the element name, not before.

类似地，化学方程式中要先写元素名字后写个数，而不是反着。

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A unique number, called an index or subscript, combined with the Shared variable name distinguishes each element in the array.

一个称为索引或注标的唯一号码，会与共用变数名称结合，用以分辨阵列中的每个元素。

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