Those topics deal with floating point and vector processing and are outside the scope of this article.

这些主题涉及的是浮点和向量处理，已经超出了本文的范围。

youdao

it's clear that you want to add a vector that looks like that, because then you go from the start of this to the finish of that, you end up at the same point and you get this invisible 0 vector.

显然应该给它加上这样一个矢量,因为从这个矢量的起点指向那个矢量的终点,最终指向的是同一个点,你就得到这个不可见的零矢量

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