主幹網絡

core network

owner / master / host / individual or party concerned / God / Lord / main / to indicate or signify / trump card (in card games)

trunk / main / core

tree trunk / main part of sth / to manage / to work / to do / capable / cadre / to kill (slang) / to fuck (vulgar) / (coll.) pissed off / annoyed

net / network

Internet

network (computing, telecommunications, transport etc)

small net

net-like object / to hold sth in place with a net / to wind / to twist / (TCM) channels in the human body