heir ap·par·ent
noun/ˌeər əˈpærənt/
/ˌer əˈpærənt/
(plural heirs apparent)
- heir apparent (to something) an heir whose legal right to receive somebody’s property, money or title cannot be taken away because it is impossible for somebody with a stronger claim to be born
当然继承人；法定继承人 - a person who is expected to take the job of somebody when that person leaves
（职位的）确定接替者；确定接班者