brother

I have two brothers, William and Mark..我有两个兄弟，威廉和马克。

My big brother (= older brother ) has always looked after me..我哥哥一直照顾我。

my twin brother.我的双胞胎兄弟

elder brother,哥哥，兄长

younger brother,弟弟

little brother,小兄弟；副气旋

big brother,哥哥；老大哥

older brother,哥哥；长兄

twin brother,n. 孪生兄弟

eldest brother,长兄

craft brother,n. 同行

kid brother,（美国英语）弟弟

half brother,同母异父（或同父异母）兄弟

blood brother,亲兄弟；结拜兄弟