It's neither aliens nor a rare disease that will threaten the human race in the future, but climate change.

未来威胁人类的不是外星人，也不是罕见的疾病，而是气候变化。

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A new arms race is on and it could change everything from the way we parent to how we get our celebrity gossip.

一场新的军备竞赛正在进行中，它有可能改变一切——从我们如何管教孩子，到如何获取名人小道传闻。

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But in roughly 15 to 20 years, a fundamental change will take place in this competitive race.

但未来的15到20年间，在这场竞争激烈的比赛中会产生重大的变化。

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And so, there's been a profound change in public presentations, public views, on race but what about implicit views? This gets more complicated.

所以人们在公众中表达他们对种族的,刻板印象发生了巨大的变化,但私下的刻板印象呢？这就复杂了。

耶鲁公开课 - 心理学导论课程节选

The speech ended with a call to unity and was generally deemed inspiring, but did it change race relations in America?

BBC: What's the point of presidential speeches?

We saw that in Mississippi where both candidates turned in a very good performance, and it didn't change the race.

NPR: McCain Hopes To Shine In Town Hall-Style Debate

Another 23 percent say they've seen a real change in race relations over the past 11 months and 7 percent say things have gotten worse.

CNN: STORY HIGHLIGHTS