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beginning; opening; start; outset
小説の冒頭から読者の心を掴む描写が印象的だった。
The description that grabbed readers' hearts from the beginning of the novel was impressive.
会議の冒頭で議長から重要な発表があった。
There was an important announcement from the chairman at the beginning of the meeting.
スピーチの冒頭でユーモアを交えると効果的だろう。
It would be effective to include humor at the beginning of a speech.