胞兄弟 meaning in English

full brothers

The twin brothers are alike in appearance but differ greatly in disposition .
那对双胞兄弟外表相似，但性格却相差很大。
Patients and methods : among 40 pts with arvc and their 195 relatives there were 2 pairs of monozygotic twins : brothers , age 47 y ; and sisters , age 48 y
患者与方法：在40例arvc患者及其195名亲属中，有两对单卵双生子：双胞兄弟年龄为47岁，双胞姐妹年龄为48岁。