However, you may still find it helpful to review our previous article for background information.
不过，在这里对之前的文章作一个回顾，以作为背景信息，还是有所帮助的。
Now if we rotate the viewport the background image will remain still.
现在，我们如果旋转视角，背景图像仍会保持静止。
Good, now if I switch to black background I can see that part in the middle is still very bad, nothing where there.
好，现在如果我切换到黑色背景，我可以看到，在中间部分仍然非常糟糕，没有什么地方有。
But there are still many differences on the same macroscopic background.
然而，在宏观相同的背景下，也存在着许多不同之处。
Our island state still lacks the profound cultural background of the British and American societies.
我们这个小小海岛还不具备英美社会深厚的文化土壤。
Background Cataract is now still the main eye disease which lead to blindness.
白内障是目前世界上最主要的致盲眼病之一。
Background Cataract is now still the main eye disease which lead to blindness.
白内障是目前世界上最主要的致盲眼病之一。
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