使他懊恼的是，可用于这个项目的资金太少。

What frustrates him is that there's too little money to spend on the project.

《牛津词典》

第二天就都说出来了，使我懊恼之至；可我还不十分难过：我以为指导和警戒的担子由他担负比由我担负会有效多了。

Next day it all came out, sadly to my chagrin; and still I was not altogether sorry: I thought the burden of directing and warning would be more efficiently borne by him than me.

youdao

使他非常懊恼的是，他在比赛中未能取胜。

Much to his chagrin, he did not win the game.

youdao