umbrella
/ʌmˈbrelə; ʌm`brɛlə/ n
1 folding frame of spokes attached to a stick and handle and covered with fabric, used to shelter a person from rain 伞; 雨伞
put up/take down an umbrella 把伞张开[合起]. Cf 参看 parasol, sunshade (sun).
2 (fig 比喻) any kind of general protecting force or influence 起保护作用的力量或势力
sheltering under the American nuclear umbrella在美国核保护伞的庇护下
Police operated under the umbrella of the security forces. 警方在保安部队的掩护下采取了行动.
3 [esp attrib 尤作定语]
(fig 比喻) central controlling agency for a group of related companies: 企业集团的中央管理机构
an umbrella organization, group, project 作为中央管理机构的组织、 作为中央管理机构的团体、 总项目.