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It is common sense to take a method and try it. If it fails, admit it frankly and try another. But above all, try something.
尝试一种方法是常识。如果失败了,坦率地承认并尝试另一种方法。但最重要的是,尝试一些事情。
If you want to understand function, study structure.
"The value of a man should be seen in what he gives and not in what he is able to receive."