Four issues stand out with cloud and grid computing: threshold policy, interoperability issues, hidden costs, and unexpected behavior.

云计算和网格计算面临着四个问题：阈值策略、互操作性、隐含成本、异常行为。

youdao

Cloud computing does not tell you what hidden costs are.

云计算并没有告诉您隐含的成本有哪些。

youdao

Extra memory could, for example, be hidden in a laptop or smart phone dock to increase a portable device's computing power when plugged in.

比如，扩展内存可以隐藏在笔记本或智能手机的插口中，即插即用，提高手持设备的计算性能。

youdao

The entire dark chassis may seem basic and highly minimalistic, but there are small intricacies like the chrome borders, hidden port covers, and wave-shaped hinges that just make this thing feel more like a computing piece of art than a basic bargain-basement PC.

ENGADGET: Samsung Series 9 (NP900X3A) laptop review