So you know everywhere on this picture you could write down exactly what the sequence of nucleotides are that make up this vector.

所以你能准确的知晓,组成图上这个载体的任何一处的核酸序列

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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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In other words, the person wants to ask, "How much i prime and how much j prime do I need to build up the vector A?"

换句话说,有人会问,"我需要用多少倍的 i' 和多少倍的 j',来组成矢量 A"

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