To create something that's never been seen before is the greatest challenge.
创造出前所未见的东西是最伟大的挑战。
The art of leather crafting is a dialogue between the past and the future.
非暴力是人类可以使用的最强大力量。
每一个科学进步都迫使我们面对新的伦理问题。
跨国合作是解决全球粮食安全挑战的关键。
The truth is rarely pure and never simple.