姐妹 (jiě mèi): 자매; 형제자매; 수녀 (학교; 자매; 여자 형제; 친한 여자 친구; 자매 (비유적); 수녀회)

We three sisters all like singing.

She went shopping with her sister.

This pair of sisters look very much alike.

Sisters should help each other.

My sister works in Beijing.

They are a pair of sisters.

Our class has ten sisters (female siblings or close female friends).

Sisters should help each other.

They are as close as sisters.