Ministry of Education《Dictionary of Chinese Idioms》

Homepage〉Idiom search〉辭典附錄〉編輯總資料庫〉[除患未然]

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Idiom	除患未然(防患未然)
Main	Body text
Frequency	1
Reference book	漢語成語考釋詞典
Appendix	編輯總資料庫