Ally: Andy, I am so excited about this Friday’s outdoor camp. 

Andy: I’ve heard a lot of good things about this camp.

Ally: I am crossing my fingers and wishing for good weather.

我很盼着这周五去露营，就是担心天气不好，所以我“cross my fingers”。

Cross是交叉的意思，fingers是手指，美国人将食指和中指交叉，来祝愿好运，“Cross one’s fingers”这个词表示希望有好运气。

I'll cross my figures so I can win a big prize.

我希望自己能那个大奖。

有不少时候，也这么说 ”keep fingers crossed” 或“have fingers crossed.”

I don’t know my score yet. I keep my figures crossed.

我还不知道成绩。我希望有好运气。

Ally: Tomorrow I will speak in front of a large audience. I am nervous.

Andy: Come on, you can do it. I will keep my fingers crossed for you.