契機(けいき)opportunity, chance

病気(びょうき)を契機(けいき)にタバコをやめた。

I quit smoking using the illness as an opportunity. {opportunity, chance}

言論(げんろん)の弾圧(だんあつ)を契機(けいき)に市民(しみん)が暴動(ぼうどう)を起(お)こした。

The citizens started a riot, taking the oppression of free speech as an opportunity. {opportunity, chance}

作戦(さくせん)の失敗(しっぱい)を契機(けいき)にもう一度(いちど)作戦(さくせん)を練(ね)り直(なお)しました。

We took the failure of the strategy as an opportunity to rework the strategy again. {opportunity, chance}

最愛(さいあい)の人(ひと)が亡(な)くなったのを契機(けいき)に僕(ぼく)は出家(しゅっけ)をしてお坊(ぼう)さんになりました。

Following the death of my beloved, I took the opportunity to become a monk. {opportunity, chance}

記者(きしゃ)：「何(なに)が契機(けいき)となって選手(せんしゅ)を今(こん)シーズンで引退(いんたい)する事(こと)を決意(けつい)したのですか？」

Reporter: "What was the opportunity that led you to decide to retire as a player after this season?" {opportunity, chance}