The true cost of oil isn't just the price per barrel—it's the environmental and social impact.
石油的真正成本不仅仅是每桶的价格,还包括环境和社会影响。
"The best investment you can make is in yourself."
解释:先前所使用的,现在或许要抛弃。现在要抛弃的,将来或许会用到。