我妹妹不小心碰到了那株多刺的玫瑰，手指被扎伤了。

My little sister accidentally touched the ___prickly rose bush and got her fingers scratched.

别问他关于考试的事，他现在特别敏感。

Don't ask him about the exam—he's feeling ___prickly right now.

这个项目遇到了一个棘手的问题，需要立即解决。

The project ran into a ___prickly problem that needs immediate attention.