现如今，这种乌托邦空想已经过时了，我们对所面临的威胁有了更深刻的认识，从彗星撞击到流行感冒，再到气候变化。

Now utopia has grown unfashionable, as we have gained a deeper appreciation of the range of threats facing us, from asteroid strike to epidemic flu and to climate change.

youdao

再有就是我们面临的威胁的性质。

Another is the nature of the threat.

youdao

这些都是我们在21世纪所面临的威胁。

These are the threats of the 21st century.

youdao

But I see our biggest threats are the implosion of the whole Middle East, to start with.

我认为我们面临的最大威胁,首先是中东问题。

普林斯顿公开课 - 国际座谈会课程节选

We face real threats.

我们面临着实实在在的威胁。

普林斯顿公开课 - 国际座谈会课程节选