to take a leap of faith

• 碰运气

to take a leap of faith的用法和样例：

例句

1. It's a matter of luck whether we are successful.
   我们是否成功是碰运气的事。
2. Chance plays a big part in many board games.
   在许多棋类游戏中，大多靠碰运气取胜。