But that's not a problem because the elements of a dictionary are never indexed with integer indices. Instead, you use the keys to look up the corresponding values.
但者其实也不要紧，因为字典里面的元素并不是用整数索引来排列的。所以你就可以直接用键来查找对应的键值。
A dictionary contains a collection of indices, which are called keys, and a collection of values.
字典包括一系列的索引，不过就已经不叫索引了，而是叫键，然后还对应着一个个值，就叫键值。
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