臭氧是一种非常活跃的氧气形态。Ozone is a highly reactive form of oxygen gas.臭氧由氧气和紫外线发生反应而产生。Ozone is produced by the reaction between oxygen and ultra-violet light.密封的飞机内很少需要补充氧气。Supplementary oxygen is rarely needed in pressurized ai...
《怀疑论的陷阱》. 剑桥: 剑桥大学印制, 1990.Barnes, J. The toils of Skepticism. Cambridge: Cambridge University Press , 1990.从 “ 怀疑论美学 ” 看托马斯·哈代的 “ 威塞克斯小说 ”Reflections on Thomas Hardy's " Wessex Novels " from a Perspective of's...