sister

Janet and Abby are sisters..珍妮特和阿比是两姐妹。

He has two sisters and a brother..他有两个姊妹和一个弟弟。

She’s my twin sister ..她是我的孪生妹妹。

...the International Monetary Fund and its sister organization, the World Bank..…国际货币基金组织和它的姐妹机构，世界银行。

younger sister,妹妹

elder sister,姐姐，姊姊

little sister,小妹妹，小女孩

older sister,姐姐

twin sister,双胞胎姐妹之一

eldest sister,长姊，大姐

sister company,姐妹公司

sister school,姊妹校

sister chromatid,姊妹染色半体

sister city,姐妹城市；友好城市

sister in law,嫂子；姑子；姨子；弟媳；妯娌

sister ship,姐妹船，姊妹船；同型船；姊妹舰

half sister,同父异母或同母异父姐妹