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▼keep [have, put] one's [O's] nose to the grindstone🔗🔉

▼keep [have, put] one's [O's] nose to the grindstone →nose 【名】.

ジーニアス英和大辞典 ページ 40609 での▼keep [have, put] one's [O's] nose to the grindstone単語。