你简直没法跟她讲道理，她绝对难缠。

You just can't reason with her, she's absolutely ___impossible.

我们发现自己处于一个难以处理的局面。

We found ourselves in an ___impossible situation.

我忍不住嘲笑这个由我在许愿井旁的个人沉思和男孩非常直率冲动的性格结合导致的难以处理的局面。

I couldn't help laughing at the ___impossible situation that had resulted from the combination of my personal musings by the side of this wishing-well, and the boy's very straightforward and impulsive character.