最終更新日:2025/12/05
The researchers were alarmed by the femalelessness of the island's bird population, which threatened its long-term survival.
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The researchers were alarmed by the femalelessness of the island's bird population, which threatened its long-term survival.
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元となった例文
研究者たちは、その島の鳥の個体群における雌の不在に驚き、それが長期的な生存を脅かしていると感じた。