巧合，偶然，意外，机缘

1. coincidence, chance, accident, fortuity

noun (common) (futsuumeishi) nouns which may take the genitive case particle 'no' adjectival nouns or quasi-adjectives (keiyodoshi)

偶然地，出乎意料地，意外地

2. by chance, unexpectedly, accidentally

adverb (fukushi)

应急预案

3. contingency

noun (common) (futsuumeishi) philosophy