最好不要允许一个变换字段名被重用。
You might not want to allow a variant field name to be reused.
通常非可视的方式是变换表单字段的名称。
The usual invisible trick is to vary the name of form fields.
经常引用的Schwartzian变换实际只是它的其中一个字段的临时数组。
The often-quoted Schwartzian transform is really just a temporary array by one of its fields. Here is an example.
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