But today, on the 10th anniversary of the iPhone, let's take a moment to consider a less obvious advantage: the potential for smartphone technology to revolutionize behavioral science.
2018年12月六级真题（第一套）阅读 Section C
Our anniversary sale started on Monday.
2017年12月六级真题（第一套）听力 Section A
柯林斯高阶英汉双解学习词典释义
N-COUNT
周年纪念（日）
An anniversary is a date which is remembered or celebrated because a special event happened on that date in a previous year.