名詞 accidental:

1. a musical notation that makes a note sharp or flat or natural although that is not part of the key signature

形容詞 accidental:

1. associated by chance and not an integral part
   同義詞：adventitious
2. occurring or appearing or singled out by chance
   同義詞：casual, chance
3. without intention (especially resulting from heedless action)
   同義詞：inadvertent

1. Bad man, the accidental, noble outlaw.
   有壞人啦，出人意料的逃。
2. The discovery of how bronze is made was probably accidental, but it turned out to be an important event.
   發(fā)現(xiàn)如何制造青銅可能是偶然的，但結果證明這是一項很重要的事情。
3. A sequence of events that although accidental seems to have been planned or arranged.
   巧合，湊巧雖是偶然的，但似乎是經計劃或安排的一系列事件
4. Our meeting was quite accidental.
   我們的相遇是很偶然的。