The price of every thing rises and falls from time to time and place to place; and with every such change the purchasing power of money changes so far as that thing goes.
每一种东西的价格都会因时间和地点的不同而涨落；每一次这样的变化都会改变货币的购买力。
最深刻的技术是那些消失的技术。它们将自己编织进日常生活的结构中，直到与生活无法区分。
In the energy sector, we must balance progress with responsibility - our actions today shape tomorrow's world.
花儿凋落随水流去，带着淡淡的红色，心中有无尽的闲愁，默默无言地埋怨着东风。