Under the ship, he printed in big red letters: C-O-N-G-R-A-T-U-L-A-T-I-O-N-S!

在船下面，他用红色大字写着：C-O-N-G-R-A-T-U-L-A-T-I-O-N-S！

youdao

Let G be a graph and let V(G) be the vertex set of G. Define the neighborhood complex N(G) as the simplicial complex whose simplices are those subsets of V(G) which have a common neighbor.

一个图G的邻域复形是以G的顶点为顶点，以G的具有公共邻接顶点的顶点子集为单形的抽象复形。

youdao

N. G. Rivers. And. Life. Rhine. HDTV.

国家地理。河流与生命系列之莱茵河。

youdao

N. G. Rivers. And. Life. Rhine. HDTV.

国家地理。河流与生命系列之莱茵河。

youdao