Last Updated：2025/11/20
Sentence
研究者たちは、約40億〜36億年前の始太古代に形成されたジルコンを発見し、地球最古の地殻に関する手がかりを得ました。
Quizzes for review
Scientists discovered zircons that formed during the Eoarchean, offering clues about Earth's earliest crust.
See correct answer
Scientists discovered zircons that formed during the Eoarchean, offering clues about Earth's earliest crust.
音声機能が動作しない場合はこちらをご確認ください
English - English
Word Edit Setting
- Users who have edit permission for words - All Users
- Screen new word creation
- Screen word edits
- Screen word deletion
- Screen the creation of new headword that may be duplicates
- Screen changing entry name
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Sentence Edit Setting
- Users who have edit permission for sentences - All Users
- Screen sentence deletion
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
Quiz Edit Setting
- Users who have edit permission for quizzes - All Users
- Users authorized to vote on judging - Editor
- Number of votes required for decision - 1
