He held power de jure and de facto (= both according to the law and in reality) .

他无论在法律上还是实际上都大权在握。

牛津词典

...politicians and kings, de jure leaders of men.

政客和国王，人类法律上的领导者

柯林斯高阶英语词典

He is the de jure owner of the property.

他是财产的注定所有权人.

口语例句

He was de jure prime minister , but de facto president.

他法律上是总理, 但实际上是总统.

期刊摘选

The Synod's declarations prevailed de jure but not de facto in the Roman Catholic Church down to the Reformation era.

直到宗教改革时期，教会会议的声明在天主教会中都仍然只是法律上认可，而非事实上通行。

柯林斯例句