But the general solutions call for a elliptical orbit.
但是，一般的解决方法，还是需要一个椭圆轨道。
Though solutions differ for everybody in different families, what are the general principles?
或许办法因人而异，但有哪些通用的原则我们可以参考？
Though solutions differ for everybody in different families, what are the general principles?
或许办法因人而异，但有哪些通用的原则我们可以参考？
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