on the cusp of
01
の瀬戸際に, の始まりに
at the starting point of a major development or change
Collocation
例
She was on the cusp of starting a new chapter in her life as she graduated from college and prepared for her first job.
彼女は大学を卒業し、最初の仕事の準備をしながら、人生の新たな章を始める瀬戸際にいました。
on the cusp between
01
の境目に, の境界線上に
at the dividing line or boundary between two distinct categories, regions, conditions, etc., suggesting a state of change or uncertainty
例
She celebrates her birthday on the cusp between Pisces and Aries.
彼女は魚座と牡羊座の境界で誕生日を祝います。
