一个关键的对象实例化的时间是多少？
首先，将form对象实例化，然后设置它的动作和方法。
First, the form object is instantiated, and its action and method are set.
即使在对象更新它们状态的情况下，也应该谨慎地考虑对象实例化。
Even in the case when objects update their state, object instantiation should be carefully considered.
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