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pioneer (C1)

カタカナ: パイオニア

IPA: /ˌpaɪəˈnɪər/

Someone who is among the first to explore a new area, or who leads the way in developing a new field, technology, or idea.

意味: 新しい地域を探検したり、新しい分野、技術、アイデアを開発する上で先頭に立つ人。

The pioneers faced many hardships as they traveled west. — The pioneers faced many hardships as they traveled west.
She was a pioneer in the field of women's rights. — She was a pioneer in the field of women's rights.

Japanese translations of Pioneer:

pioneer in (prepositional phrase): To be among the first to work in a particular field or area. — "She was a pioneer in the field of genetic engineering."
pioneer of (prepositional phrase): To be one of the first people to develop or achieve something. — "He is considered a pioneer of modern jazz music."