Having been frustrated in its efforts for the past three days, the Red Cross said it would try again on Sunday.

在过去三天的努力受挫后，红十字会表示将在周日再次尝试。

And that's one thing that's frustrated me in the broader discussion.

这是让我在更广泛的讨论中感到沮丧的一件事。

They tried hard, and they were beaten back; they were frustrated in their task.

他们努力了，结果被击退了；他们在任务中受挫。

But they were frustrated in some of the more ambitious reforms, such as overhauling the tax system, which is notoriously complex.

但他们对一些更雄心勃勃的改革感到沮丧，比如改革税收制度，这是出了名的复杂。