Point the camera at a white background, and observe this phenomenon with a magnifying glass.
将相机对准白色背景，然后用放大镜观察这种现象。
With this background, let's look at the function pthread_cond_timedwait, which you use for the second check.
有了这些背景知识，我们来看看pthread_cond _ timedwait函数，这个函数用于进行第二个检查。
So, the thesis studies and discusses the subject deeply at this research background.
本文正是在这一研究背景下对本课题进行了比较深入的探讨与研究。
The main topic and background of this thesis are also given at last.
本课题的项目背景及主要工作。
Before I tell you the secret, let us look at the background of this painting.
在我说出秘密前，我们回顾一下此画的历史。
Under the academic background at that time, this subject was wise and farsighted.
在当时的学术背景下，这一选题无疑是明智而有远见的。
At the start, this paper introduces a background of the Convention and its structure.
本文首先介绍了本文公约产生的背景以及公约的结构。
This text is also at the time of the specific written social background.
这篇文章也是在当时的特定社会背景下写成的。
The background music to this film is completely at odds with the storyline.
这部电影的配乐与剧情风马牛不相及。
We discovered that a little more technical background is required at this point.
说到这里，我们还需要了解一些技术知识。
We discovered that a little more technical background is required at this point.
说到这里，我们还需要了解一些技术知识。
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