In the oil and gas sector, technology is the key to unlocking efficiency and reducing environmental impact.

"In observational studies, we often have to rely on assumptions that are not directly testable."

解释：走夜路的人可以保证自己不做坏事，但却没有办法让狗不对着自己乱叫。

你不会一觉醒来就变成蝴蝶——成长是一个过程。

变得快乐的技巧几乎完全不同于不悲伤的技巧。