她给自己安排了一项艰巨任务。

She's set a difficult task for herself.

《牛津词典》

她给自己安排了一项艰巨任务。

She's set herself a difficult task.

《牛津词典》

我给自己定了一项艰巨任务。

I had set myself a tough assignment.

《牛津词典》

That is going to be the challenge.

这将成为一项艰巨的任务。

麻省理工公开课 - 固态化学导论课程节选

What we've seen is a testing of the system -that we have regulatory requirements, that banks have enough capital -but this regulation is challenging because it's being stressed right now.

我们列举的这些案例都是对银行体系的考验,我们需要加强监管,以确保银行有充足的资本,但监管确实是一项艰巨的任务,因为现在面对的压力更大了

耶鲁公开课 - 金融市场课程节选