李先生牛肉面大王的芝麻大油条和德克士的黑金藤椒脆皮鸡腿哪个好吃?

“This is a great example of how we can use data from the world's largest and most complex database in history.
The World Health Organization (WHO) has released its annual report on AIDS, which shows that there are 906 million people infected with HIV worldwide. The global death toll due to AIDS is now at around 28 million deaths per year.
In this paper we discuss two different approaches: firstly, we consider the impact of an increase in the number of countries affected by the disease.
The second approach deals with issues related to the health of the populations affected by the disease.