不胜其任
词典not capable enough to take on heavy responsibilities
1. 。我母亲总是待人以诚，伊爵士，我知道，她觉得我文墨未通，不胜其任。
My mother is awfully conscientious, Lord Illingworth, and I know she doesn't think I am educated enough to be your secretary.
2. 在2年多的时间里，尽管我们八赴河北省的定州市，对农村妇女进行口述访谈与培训，初步摸索和积累了一些农村妇女研究和培训的经验，但由于当时理念和经验远不胜其任，直到现在还不能对那时的调查做一个像样的分析总结。
We got some experience in women researching and training, until now we can not make a summary to that first investigation.