1. 傘；雨傘；陽(yáng)傘
    An umbrella is an object which you use to protect yourself from the rain or hot sun. It consists of a long stick with a folding frame covered in cloth.

umbrella

    e.g. Harry held an umbrella over Dawn.
           哈里為唐打著傘。

2. 綜合團(tuán)體；總稱；統(tǒng)稱
    Umbrella is used to refer to a single group or description that includes a lot of different organizations or ideas.

umbrella是什么意思

    e.g. Does coincidence come under the umbrella of the paranormal?...
           巧合屬于超自然現(xiàn)象嗎？
    e.g. Within the umbrella term 'dementia' there are many different kinds of disease.
           “癡呆”這一統(tǒng)稱里包括多種不同的疾病。

3. 保護(hù)傘（指保護(hù)某個(gè)國(guó)家或群體的體制或協(xié)議）
    Umbrella is used to refer to a system or agreement which protects a country or group of people.

    e.g. The major powers have chosen to act under the moral umbrella of the United Nations...
           世界主要大國(guó)都選擇在聯(lián)合國(guó)的道義框架下行事。
    e.g. Britain cannot avoid being under the US nuclear umbrella, whether it wants to or not.
           不管愿不愿意，英國(guó)都免不了要處于美國(guó)的核保護(hù)傘之下。