be barking up the wrong tree idiom informal
找错了原因；用错了方法
to be wrong about the reason for something or the way to achieve something
She thinks it'll solve the problem, but I think she's barking up the wrong tree. 她认为这能解决问题，可我觉得她找错了门。
英汉双解词典收录81607条英汉双解翻译词条，基本涵盖了全部常用单词的读音、翻译及用法，是英语学习的有利工具。