Half Brother, 半血緣兄弟(同父異母或同母異父的兄弟)

Toshifumi Kitamura/Agence France-Presse — Getty Images

Kim Jong-nam in 2001. He was estranged from Kim Jong-un, the North Korean leader.

Kim Jong-un’s Half Brother Is Reported Assassinated in Malaysia - 纽约时报中文网 国际纵览
http://cn.nytimes.com/asia-pacific/20170214/kim-jong-un-brother-killed-malaysia/en-us/
El Nacional

半血緣兄弟,half brother,元照英美法詞典－ 免費線上查詢! - 高點法律網

half-brother漢語(繁體)翻譯：劍橋詞典 - Cambridge Dictionary