出自《抱朴子·广訾》。病到很急的时候就会觉得良医是重要的了，世道动乱的时候就会觉得忠贞的臣子是重要的了。
Our industry must adapt to the changing energy landscape while continuing to meet the world's growing energy demands.
The true value of a tree is measured in decades, not dollars.
The truth is that life is delicious, horrible, charming, frightful, sweet, bitter, and that is everything.