The cloud is an abstract notion of a loosely connected group of computers working together to perform some task or service that appears as if it is being fulfilled by a single entity.

云是一个抽象的概念，表示松散连接在一起的计算机组，这些计算机共同执行某项任务或者服务，就像是使用一个单独的实体完成一样。

youdao

youdao

youdao

The group is supported by building designers and experts connected to the operation of tall buildings.

VOA: special.2010.03.31

The reason, in my opinion, is that there are many more people in your weakly connected group than in your strongly connected group.

FORBES: Come On Now, Hit 'Submit'

This diverse but well-connected group have the advantage being able to invest in innumerable for-profit Christian businesses around the world that seek to achieve spiritual and social aims.

FORBES: Christian Investors Get Patient With Their Capital

Part of the 123D family of products, 123D Catch users can take advantage of a connected group of Autodesk software, fabrication services for 3D printing and laser cutting, and a community of like-minded individuals focused on 3D design and personal fabrication.

ENGADGET: Autodesk launches 123D Catch for iPad, lets you turn pics into 3D models