Log in to reduce ads and focus on learning.
広告
Last Updated
：2025/12/03
Quizzes for review
The hard, mineralised substance that makes up the visible part of teeth.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
tooth enamel
Regular fluoride treatments help strengthen tooth enamel and reduce the risk of cavities.
See correct answer
Regular fluoride treatments help strengthen tooth enamel and reduce the risk of cavities.
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
