Fingers Crossed 仅仅是指交叉手指吗？

Cross legs: 翘二郎腿、盘起腿

It’s not polite to cross your legs during a formal dinner.

在正式晚餐时翘二郎腿是不礼貌的。

Boys and girls, cross your legs just like this。

孩子们，像这样盘起腿来。

Cross arms: 交叉胳膊

He is standing there with his arms crossed.

他双手交叉站在那里。

Cross mind: 无意中想到

That crazy idea just crossed my mind.

那个疯狂的想法闪进我的脑海。

Fingers crossed 祈求好运

I’ll keep my fingers crossed for you.

我希望你一切都好。

Let’s keep our fingers crossed for the exam on Thursday.

希望周四的考试能考好。