(These two points are connected, plus they are both connected to the original point).

(四个点中的两个点相连，加上它们又都与最初的一个点相连)。

youdao

(These two points are connected, plus they are both connected to the original point).

(四个点中的两个点相连，加上它们又都与最初的一个点相连)。

youdao