Cystic fibrosis is the commonest fatal hereditary disease.囊性纤维化是最常见的致命性遗传疾病。

In men, hair loss is hereditary.男性脱发是遗传性的。

The position of the head of state is hereditary.国家元首的职位是世袭的。

British Prime Ministers are traditionally offered hereditary peerages.按照传统, 英国首相是要获授世袭贵族爵位的。