人工智能的关键一直是表示法。

Time has no divisions to mark its passage, there is never a thunderstorm or blare of trumpets to announce the beginning of a new month or year.

Small farms can have a big impact when given the right tools and knowledge.

循环经济是一个创造价值的机会，而不仅仅是减少浪费。

人生如梦，不必过于执着。