参加这个培训项目是他做出职业转型决定的关键一步。

Enrolling in this training program was a ___career-changing step for him.

参加那次行业峰会是她职业生涯的转折点，从此她决定转向科技领域工作。

Attending that industry summit was a ___career-changing experience that made her decide to switch to the tech field.