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N1
いっせきをとうじる (isseki wo toujiru)
一石を投じる

to throw a stone (into a quiet pond); to cause a stir/sensation; to make a suggestion (to provoke discussion)

💡 Nuance & Usage: An idiom meaning to introduce something (an idea, a remark, an action) that causes a significant reaction, discussion, or change in a previously calm or stable situation. (静かな状況や議論に、何らかの発言や行動によって大きな波紋や影響を与えることを意味する慣用句です。)

📝 Example Sentences

彼の発言が、その議論に大きな一石を投じた。
His remark threw a significant stone into the discussion.

Practice Quiz

Test your understanding of "一石を投じる"!

彼の型破りな提案は、会議に_______。
🎉 正解 / Correct!
日本語: 「型破りな提案」が議論に大きな影響を与える様子を「一石を投じる」と表現します。
English: '一石を投じる' (to throw a stone) describes how an 'unconventional proposal' can cause a significant impact on a discussion.
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