他们以坚忍刚毅的精神直面困境。They bore their plight with stoicism and fortitude.强健的方下巴是刚毅性格的标志.A strong square jaw is a sign of firm character.她通常总是默默地以刚毅不屈的精神来承担他们的不幸.As a rule she supported their misfortunes with a silent fortitude....
简介氟树脂的种类和聚四氟乙烯的发现经过.Sorts of fluororesins and the discovery of polytetrafluoroethylene are introduced.液晶容器的内表面上可以包括一含氟树脂.An inside surface of the liquid crystal container may include a fluorine resin.聚全氟乙丙烯是一种重要新型氟树脂产品,本...