Travel to learn happy go lucky, indifferent point, walk to stop. Don't be afraid to miss anything, because on the road you have harvested freely in a good mood.
旅行要学会随遇而安，淡然一点，走走停停，不要害怕错过什么，因为在路上你就已经收获了自由自在的好心情。
We discuss two important properties of indifferent curves, point out the equivalence of them and obtain the method of construct the indifferent curve.
探讨了确定无差异曲线族的两个重要条件，指出了两条件的等价性，并在此条件下得出结构无差异曲线族的方法。
We discuss two important properties of indifferent curves, point out the equivalence of them and obtain the method of construct the indifferent curve.
探讨了确定无差异曲线族的两个重要条件，指出了两条件的等价性，并在此条件下得出结构无差异曲线族的方法。
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