brother-in-law
definitions
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noun
The brother of one's spouse, or the husband of one's sibling.zh: 配偶的兄弟或兄弟姐妹的丈夫
examples
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He was to bring his sisters and his brother-in-law, Mr. Smith.
他打算带上他的姐妹和她的姐夫史密斯先生。