leap in the dark meaning in English

在黑暗中跳跃

The action is a leap in the dark .
这是一次冒险行动。
I am not sure . it ' s only a leap in the dark
我也没有把握。这只是一次冒险。
His move to america was a leap in the dark
他迁居美洲是件冒险的事
The car left side of the screen is performing this stunt the protagonist , the player need to control it , screen leap in the dark groove cutting , parked on the right side of the gray ground , or once almost too far , would lead to the fatal car crash . . .
画面左侧的小车是这次特技表演的主角，玩家需要控制它，飞跃画面中深色的沟堑，停到靠右侧的灰色地面上，一旦过近或过远，都会导致车毁人亡. .
Introduction : the car left side of the screen is performing this stunt the protagonist , the player need to control it , screen leap in the dark groove cutting , parked on the right side of the gray ground , or once almost too far , would lead to the fatal car crash . . .
画面左侧的小车是这次特技表演的主角，玩家需要控制它，飞跃画面中深色的沟堑，停到靠右侧的灰色地面上，一旦过近或过远，都会导致车毁人亡. .