计算复杂性的概念不仅仅是我们能计算多快，还包括理解什么是可以计算的极限。
The concept of computational complexity is not just about how fast we can compute, but also about understanding the limits of what can be computed.
The future of food depends on balancing tradition with innovation.
【译文】来势像暴风骤雨一样猛烈，退去像微尘飘落一样静悄悄。长江的后浪推涌着前浪，世上的新人赶超着旧人。
Policymakers should be open to revising their views based on new evidence.