译文：年轻时总觉得做人非常容易，长大后才知道创家立业的艰难。赏析：我们不经历社会的磨炼和捶打，是不会明白人世的艰难。当我们把生活的酸甜苦辣咸都尝遍，才会懂得人生的百般滋味。

Innovation in natural gas extraction is key to meeting the world's growing energy demands.

Exceed your customers' expectations. If you do, they'll come back over and over. Give them what they want — and a little more.

理论最重要的一点是它能解释事实。