1.a lightweight handheld collapsible canopy
2.a formation of military planes maintained over ground operations or targets;
an air umbrella over England
3.having the function of uniting a group of similar things;
the Democratic Party is an umbrella for many liberal groups
4.covering or applying simultaneously to a number of similar items or elements or groups;
an umbrella organization
生化危机中安布雷拉公司编年史: 1960年,声名显赫的亚西福特家族(ashford)第六代继承人爱德华·亚西福特(edward ashford)和年轻贵族奥斯威尔·e·斯宾塞(oswell spenser)在进行古生物研究时从女王蚁的基因中发现一种古代病毒,病毒的特征立刻引起他们的震惊,这是一种能使生物体基因变异,丧失思想意识的病毒,同时他们也发现,被感染者会拥有极强的抵抗力和生命力,两人马上意识到将这种病毒用于军事上的巨大用途,于是将这种