姐妹
jiě mèi
（姐和妹） sisters:
同胞姐妹 sister of the whole blood; full sister
异父(母)姐妹 half sister
姐妹之情 the affection of elder and younger sisters
这姐妹俩容貌极相像。 The two sisters are as like as two peas.
（兄弟姐妹） brothers and sisters:
你们姐妹几个? How many brothers and sisters do you have?