chí-bē姊妹

elder sister and younger sister

elder sister and younger sister; sisters; sister (close female friend); sister (fellow female member of a religion); brothers and sisters

English Wiktionary, “姊妹” (CC BY-SA 4.0) — https://en.wiktionary.org/wiki/%E5%A7%8A%E5%A6%B9 · confidence: High (Wiktionary, PH/Quanzhou/Jinjiang)