1.他不是不愿意帮助你，而是他心有余而力不足。
It‘s not that he does not like to help, but that the spirit is willing, but the flesh is week.
2.心有余而力不足，形容有意 [干某事] 而客观上（如身体）不允许。
The spirit is willing, but the flesh is week describes a person has interest [to do something] but objectively, such as the body) it is not allowed.
3. 我也想去跑马拉松，可心有余而力不足啊。
I also want to run a marathon, however “the spirit is willing, but the flesh is week.”
4. 你们碰到这么大的困难，我也想帮助你，但是我心有余而力不足啊。
You run into such a big difficulty, I also want to help you, however “the spirit is willing, but the flesh is week”.
5.心有余而力不足
The spirit is willing, but the flesh is week.
