We have to act to preserve the unity of this nation.

我们必须行动起来以维护这个国家的统一。

《柯林斯英汉双解大词典》

We have to act quickly—there is not a moment to waste.

我们必须迅速采取行动，时间一刻也不能浪费。

youdao

We have to act quickly; there is not a moment to waste.

我们必须迅速采取行动; 时间一刻也不能浪费。

youdao

"Since 2004 we have been working closely with international agencies to gather intelligence to overcome any potential terrorism act."

VOA: standard.2010.06.02

We have the capacity to think morally, we have the capacity to act morally, and to be altruistic or benevolent.

我们能够以道德的方式思考，我们也能够做有道德的事，我们可以无私奉献，可以乐善好施。

普林斯顿公开课 - 人性课程节选

In order to not act in a stereotyped fashion, we have to consciously push them down, we have to consciously override them, and that's possible, but it takes work.

为了不表现出刻板印象，我们要有意识地压抑它们，我们要有意识地钳制它们，这是有可能的，但需要下功夫。

耶鲁公开课 - 心理学导论课程节选

"These are times when we have to act with a sense of national unity, " he said.

CNN: Billionaire sworn in as Chilean president

We have to act for the sake of democracy and the future prosperity of our children.

CENTERFORSECURITYPOLICY: Center For Security Policy

Nevertheless, we have to act with caution because I think the crisis has not passed in its entirety.

CENTERFORSECURITYPOLICY: Center For Security Policy