They were married that very day. The soldier was chosen to be the king's heir.

就在这一天，他们举行了婚礼。兵士被选为国王的继承人。

youdao

He claims to be the rightful heir.

他要求做合法的继承人。

《新英汉大辞典》

Boys are often sold to families desperate for an heir; girls can be reared as future brides for rural men.

男孩经常卖给那些极度渴望有个继承人的家庭，女孩则可以成为农村男人未来的新娘。

youdao

David Cameron will hope that his tribute to a woman who he said had rescued the country and made it great again will help convince his party that he wants to be heir to Thatcher and not, as he allegedly once said, heir to Blair.

BBC: Party leaders are all Thatcher's children

Every Republican candidate in 2008 claims to be the true heir to Reagan.

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Speculation abounds about who might be the heir to Ms Wang's fortune.

ECONOMIST: Face value