When you look at the urgent challenges we face today, we need to redouble our efforts.
当你们看到我们今天所面临的严峻挑战。 （你就知道）我们要加倍努力…
How to cultivate and what kind of personnel to cultivate are urgent challenges for our educators.
怎样培养和培养什么样的人才已经向教育界提出了严峻的挑战。
Second, how do we make technology work for us, and not against us - especially when it comes to solving urgent challenges like climate change?
第二，我们如何使技术为我们服务，而不是与我们对对抗，尤其是在解决迫在眉睫的挑战，比如气候变化时。
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