过去是一个陌生的国度;那里的人做事方式不同。
A well-designed system is one that can evolve over time without requiring significant rework.
世界需要各种形式的能源来满足不断增长的需求,天然气是一种更清洁的替代品,可以帮助填补这一空白。
Profitability and environmental responsibility are not mutually exclusive—they go hand in hand when done right.