to have two (or more) qualities/things at the same time; to possess additional or combined properties.
彼は技術力と創造力を併せ持つエンジニアだ。
He is an engineer who combines technical skill and creativity.
このプランは利便性と安全性を併せ持っている。
This plan combines convenience with safety.
長所と短所を併せ持つのが人間だ。
People have both strengths and weaknesses.