Last Updated：2025/11/21
Sentence
リン酸塩に変化した殻は、古生物学者がその生物の年齢を特定するのに役立つ微細な成長線を示していた。
Quizzes for review
The phosphatized shell revealed microscopic growth lines that helped paleontologists determine the creature's age.
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The phosphatized shell revealed microscopic growth lines that helped paleontologists determine the creature's age.
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Related words
phosphatized
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