Her marriage to John was a leap in the dark.

她与约翰结婚是贸然行动。

All growth is a leap in the dark, a spontaneous unpremeditated act without the benefit of experience.

所有的成长是一种在黑暗中的跳越，一种自发性非预谋没有经验的益处的行动。

Government ministers are being accused of taking a leap in the dark as they prepare to radically change the education system.

人们指责政府的部长们准备对教育制度进行重大变革是冒险行为。