Sent_en: 2zh The men were either "biological" brothers and shared the same mother or "non-biological" brothers through adoption or as half or step siblings.
Sent_yy: 这些男子要么是共享同一母亲的“亲生”兄弟，或者通过收养成为“非生物”兄弟，要么作为同父异母或同父异母的兄弟姐妹。