跨国合作是解决全球粮食挑战的关键。
Collaboration across borders is key to solving global food challenges.
The complexity of a learning problem is often determined by the size and structure of the hypothesis space.
The truth is rarely pure and never simple.
品牌只是一种看法，而随着时间的推移，看法将与现实相匹配。有时它会领先，有时它会落后。但品牌只是一些人对产品的集体印象。