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。

我常说，你永远不可能太努力工作。

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

"Acting is not about being someone different. It's finding the similarity in what is apparently different, then finding myself in there."

Natural gas will play a critical role in the energy mix as we move toward a lower-carbon future.

"Fear is the most democratic of all emotions."