Several dark cloud layers are visible within this layer.
在这个层次以内还有一些乌云。
Darkness was coming early because of the cloud layer that still blanketed the sky.
由于空中仍然垂着沉甸甸的乌云，天黑得较早。
Consider the application services layer in the cloud.
考虑云中的应用程序服务层。
The infrastructure layer is the foundation of the cloud.
基础架构层是云的基础。
The infrastructure layer is the foundation of the cloud.
基础架构层是云的基础。
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