Many people fear（ it could be the next global epidemic,）宾语从句做fear的宾语 especially as scientists （who studied tissue from the bodies of people）定语从句修饰 （scientists） (who died of the 1918 Spanish Flu）定语从句修饰（people） proved that （Bird Flu is a modern adaptation of the same virus）宾语从句做proved 的宾语
很多人害怕将又有世界性的传染病,尤其是当科学家从死于1918西班牙流感的人的组织中发现 禽流感是当时那种病毒的现代进化版.