Traditionally the pump assembly is selected by discharge and delivery head at the most unfavorable condition.

传统的设计方法是以最不利工况所需的流量和扬程作为设计点来选泵.

This is also about a group of Chinese dream chasers trying to keep the beacon of hope lit even though being in the most unfavorable situations.

这亦是一个关于一群中国追梦者的故事：他们即使在最艰难险阻的环境里，依然试图点亮希望的灯塔。