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gun point; muzzle
犯人が銃口を向けてきた。
The criminal pointed the muzzle at me.
銃口からまだ煙が上がっていた。
Smoke was still rising from the muzzle.
警察官はためらいながら銃口を下ろし、事態を沈静化させた。
The officer hesitantly lowered his muzzle and defused the situation.