The mining industry is cyclical, but great companies are built by those who can navigate the downturns as well as the booms.
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。
办丧事虽有一定的礼仪,但还是以哀痛为本。
The essence of mathematics lies in its freedom.
扩展程序的最好方法是扩展它。