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fullness; completeness; perfection; substantiality
enhancement; improvement; enrichment; upgrading
replenishment; repletion
この大学は図書館の蔵書が非常に充実している。
This university has an extremely well-stocked library.
新入社員研修の内容を充実させる計画がある。
There are plans to enhance the content of new employee training.
充実した休日を過ごすために旅行の計画を立てた。
I made travel plans to spend a fulfilling holiday.