belle-sœur

1. 1

   sister-in-law (wife's or husband's sister)

2. 2

   sister-in-law (brother's or sister’s wife)

3. 3

   step-sister, stepsister

真题出处来自 FreeTCF 题库，做题要在 FreeTCF 登录；这里只列出这个词出现的句子。