What makes a person a friend的解释(高分值)

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What makes a person a friend的解释(高分值)
能不能再把This dwarf planet is further from the Sun than Pluto这句话翻译一下?(提高悬赏)(要两句话都翻译)

具备什么特征才能让一个人成为朋友 owe somebody a favour (=feel that you should do something for someone because they have done something for you)应该帮助某人 这个矮行星要比冥王星还要远离太阳...