My other sister is a doctor.

我的另一个妹妹是医生。

《牛津词典》

Kate is my sister.

凯特是我的妹妹。

youdao

This is my sister Anna.

这是我的妹妹安娜。

youdao

"Now we will be late." My sister attends a small college where she is one of the smartest students.

VOA: special.2011.04.10

"And,it is strange that if you hate my brother so much, why would you marry his sister!"

VOA: special.2009.06.27

Born to save my sister's life." Family drama is another subject of movies this summer.

VOA: special.2009.06.12

Nothing is more important than teachers. (Applause.) My sister is a teacher.

WHITEHOUSE: The Importance of Education Reform

My parents are rich, my family is rich and my sister and I are, therefore, as good as rich.

NPR: Excerpt: 'The Elegance Of The Hedgehog'

My sister is a teacher -- (applause) -- but -- and I am a huge supporter of the teachers' unions.

WHITEHOUSE: Town Hall in Los Angeles