を契機に
(O keiki ni)
taking X as the opportunity / prompted by.
Connection rules
- +Noun + を契機に / を契機として.
- +Formal / written register — more literary than 〜をきっかけに.
- +Common in news and business: 事故を契機に、安全対策を強化した.
Examples
1.
事故を契機に、安全対策を強化した。

Jiko o keiki ni, anzen taisaku o kyouka shi ta.
Prompted by the accident, safety measures were strengthened.
「taking X as the opportunity / prompted by」
2.
留学を契機として、彼の人生は大きく変わった。

Ryuugaku o keiki toshite, kare no jinsei wa ookiku kawa ta.
Taking studying abroad as the turning point, his life changed greatly.
「taking X as the opportunity / prompted by」
Practice
Prompted by the legal amendment, the company's internal regulations were reviewed.
今回の___、社内規定が見直された。
Romaji also accepted