Next, we read the HTML form values into the dictionary-like form instance.
接着，我们将html表单值读取到类似于字典的form实例中。
Most of the time, a custom object that implements only a subset — even a fairly small subset — of, for example, the methods of a built-in dict are dictionary-like enough for purposes at hand.
大部分情况下，只实现了比如内置的dict类型的方法的一个子集——甚至是相当小的子集——的自定义对象，就足够“类- dictionary”而可以满足当前的要求。
I don't like that new dictionary, besides, it's too expensive.
我不喜欢那本新字典，另外，它也太贵。
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