后嗣的英文：
heir
heir是什么意思：
n. [C]
1.继承人；嗣子(+to)
2.（传统、才能、性格等的）继承者(+to)
He wanted to beget an heir.
他想生个子嗣。
He proclaimed Charles his heir.
他宣布查尔斯为他的继承人。
To be the heir to ancient sages and the teacher of posterity
承先启后
She made her stepson heir.
她让继子做自己的继承人。
They have to make the bed and clean heir room.
他们必须要铺床和打扫房间。
