解释：大部分药材都以新鲜为好，但艾草却以陈年的为佳，体现了药材使用的特殊性。

我们生产的每一桶石油都必须负责任地完成，充分考虑环境和社会影响。

Leadership is about making others better as a result of your presence and making sure that impact lasts in your absence.

大自然往往隐藏于幕后。

A good story should make you laugh, cry, and wait.

The greatest weapon against stress is our ability to choose one thought over another.

Drawing makes you see things clearer, and clearer and clearer.