形容词
1. Ours and theirs are sister schools.
我们学校和他们学校是姊妹学校。
名词
1. Keep fighting for your rights, sisters!
姐妹们，为捍卫你们的权利而不懈斗争！
2. She was a sister to him.
对他来说，她像姐妹一样。
3. We are sister.
我们是姐妹。
4. She is elder sister to Susan.
她是苏珊的姊姊。