a leap of faith
US /ə liːp əv feɪθ/
UK /ə liːp əv feɪθ/

1.
信念的飞跃, 大胆一搏
an act of believing in or accepting something unseen or unproven, often despite evidence to the contrary
:
•
Starting a new business requires a leap of faith.
开创一项新事业需要一次信念的飞跃。
•
She took a leap of faith and moved to a new country without a job.
她大胆一搏,没有工作就搬到了一个新国家。