It's beyond me. 側重于說情感上的無法理解;It's all Greek to me. 側重于說對技術等一竅不通
示例
A:Do you know why Tom quit such a high paying job?
B:It's beyond me.
A:你知道為什么湯姆要辭掉這個高薪的工作?。?/p>
B:我不知道。
A:Didn't he tell you how to use it?
B:What he said is too professional. It's all Greek to me.
A:他沒有告訴你怎么用嗎?
B:他說得太專業(yè)了,我聽不懂。