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prime minister (as the head of a cabinet government); premier
日本の総理大臣が外国を訪問すると報道された。
It was reported that Japan's prime minister will visit a foreign country.
総理大臣の演説を聞いて国の方針を理解したよ。
I understood the national policy by listening to the prime minister's speech.
総理大臣になるには国会議員でなければならない。
You must be a member of parliament to become prime minister.