最近发表的一系列有关沙特阿拉伯的书中，标题都紧扣“危机、威胁、秘密、恐怖”这些词语，提示人们沙特阿拉伯是一个黑暗且令人感到绝望的地区。

Recent book titles, strong on words such as crisis, threat, secrets and terror, seem to suggest that this is a dark and desperate place.

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还假设您想将Twitter搜索结果与一系列有关搜索术语“master chief”的新闻标题结合在一起。

Also assume that you'd like to accompany the Twitter search results with a list of news headlines about the search term "master chief."

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