half-brother
柯林斯词典
1. N-COUNT Someone's half brother is a boy or man who has either the same mother or the same father as they have. 同母异父兄弟; 同父异母兄弟
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half brother (half brothers)
剑桥词典
- a brother who is the son of only one of your parents
同父异母（或同母异父）的兄弟 返回 half-brother