At last, this paper discussed the method of buffer creation for special objects, for example, self-intersect of object and that contains several holes.

文末对特殊目标如目标本身自交情况和目标内含有若干孔洞的情况进行了讨论。

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His best example of such self-sacrifice is warfare, an activity in which morality and immorality intersect in ways that have always been puzzling and where liberals and conservatives often draw opposite conclusions about what is right and wrong.

ECONOMIST: Human evolution