那么在派遣一批火警人员进入火海似的大楼之前，为什么不派遣一组机器人进去呢？

Before you send firemen into a burning building, why not send in a group of robots?

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从根本上说，虚拟化意味着，当需要时，数据中心的一批服务器会转化成一组计算能力，而非单独作业。

In essence this means that the servers in a data centre are turned into a pool of computing power to be tapped into as needed rather than being used individually.

youdao

一组，一批作为一体出售或处理的一批类似物品，如股票。

A set of like items, such as shares of stock, sold or handled as a unit.

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