【Ivy-yuhua Wan】評論
an umbrella term總稱
【Paul Shih】評論
Definition of: umbrella term. A term used to cover a wide-ranging subject rather than one specific item.
【第一口井已成功挖掘泉水,感】評論
http://www.wisegeek.com/what-is-an-umbrella-term.htm# 關於umbrella term的英文解釋,可以順便練英文