【释义】：礼节重在相互回应。送出礼遇而对方不回应，这是不合礼数的；接受了别人的礼遇却不回报，同样也是不符合礼的要求。

Collaboration is key to solving the complex energy challenges we face today.

A company's culture is defined by the actions of its leaders.

The great end of life is not knowledge but action.  

采矿业是周期性的，但伟大的公司是由那些既能驾驭低迷期又能驾驭繁荣期的人建立的。

"The past is a foreign country; they do things differently there."

The law of nature is the fundamental wisdom.