frust

例句：

1. 1. She was so frustrated by the unexpected delay that she gave up on her project.
   她因为意外的延迟而感到沮丧，所以放弃了她的项目。
2. 2. The failure of the new product left us all feeling frustrated.
   新产品的失败让我们都感到沮丧。
3. 3. Her frustration with the bureaucracy made her want to leave the job.
   她对官僚体制的不满使她想要离开这份工作。