In this tutorial, we'll cover almost every aspect of the NIO library, from the high-level conceptual stuff to under-the-hood programming detail.

在本教程中，我们将讨论nio库的几乎所有方面，从高级的概念性内容到底层的编程细节。

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You may need a fleece sports cap that you put on under your hood or cover your head when you are in a helicopter or in a tent.

你还需要一羊毛绒帽子戴在外衣兜帽之下以便在你在直升机或帐篷里的时候包裹住你的头部。

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The lens hood is used to cover up the lens.

遮光罩是用来遮盖镜头的。

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The idea is to completely open up the hood on the thinking that goes into one of these cover packages.

FORBES: Names You Need to Know in 2011: Crowd-sourcing Forbes Magazine, Update I

Our cover subject is one of the more profitable companies on our list, BMW. Under the hood, BMW is built with solid German precision, but that is not enough to sell cars.

FORBES: Under fire