He is in is discontinued with by the replace is a new boyfriend's edge.
他是在被下马和被替换为一个新男朋友的边缘。
It only remains to replace each edge of this diagram by a suitable subgraph which bears the information previously given by the direction and colour.
剩下要做的事只是用适当的子图代替这个图解的每条边,使得原来用方向和颜色给出的信息由这个子图来担当。
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