可访问性和廉价性是导致公共云日趋流行的两个关键特征。
Accessibility and affordability are two of the key characteristics that have led to the popularity of the public cloud.
正如其它领域的一些变化，在这个领域已经改变的是计算机拥有了计算能力以及其 廉价性。
What has changed, in this field as in so many others, is the availability and cheapness of computing power.
今天，这个地区没有人会讨论改善道路和廉价交通方式的重要性。
Today, nobody in the district argues about the importance of improved paths and inexpensive means of transport.
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