You don't need a weatherman to know which way the wind blows.
有一个终点是好的；但最终重要的是旅程本身。
柠檬问题发生的原因是卖家比买家更了解产品，从而导致市场失灵。
The effects of immigration are often localized and context-specific.
建筑师必须既是艺术家又是技术专家。