我想问一下"Keep you hair across."同"Keep you finger across."

对于后面一句，我认为Keep you finger across是祈祷的意思，有时候会说：“keep one's fingers crossed for sb.”
比如：
I will keep my fingers crossed for you, good luck!（我会为你祈祷，祝你好运！）

后面一句只有祈祷的意思，我问过我的外教。不记得他讲过什么典故。前面一句就不太清楚了，你能告诉我前面一句是什么意思么？

1。 in the cross hairs: in a position to be criticized or attacked.

Usage notes: usually the situation results from holding opinions that are not popular or are too independent

Related vocabulary: caught in the middle, caught in the crossfire

Etymology 语源: based on the literal meaning of cross hairs (= crossed lines used to aim a gun)瞄准的准星（枪）

For example:

Her independence put her in the cross hairs of some local politicians.

2。 cross your fingers/keep one's fingers crossed

to hope that things will happen in the way you want them to； to hope for good luck. 祈祷

Etymology 语源: based on the practice, esp. of children, to put one finger over the next one either as a