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sovereign; ruler; head of state
各国の元首が集まり国際会議が開催された。
An international conference was held with heads of state from various countries.
元首同士の会談で緊張緩和が期待されている。
Talks between heads of state are expected to ease tensions.
その国では元首の権限が憲法で制限されていた。
In that country, the head of state's powers are limited by the constitution.