The key to trading success is to have a clear understanding of risk and reward.

相对论是一种原理性理论，而非构造性理论。

Innovation in refining isn't just about efficiency; it's about reimagining the role of hydrocarbons in a low-carbon future.

人对意义的追寻是他生命中的主要动机。

Efficiency in farming shouldn’t come at the cost of biodiversity.

释义：看见一片落叶，就知道一年内的时间将要到头了。通过细微的迹象，可以预料到整个形势的发展趋向与结果。