This was very big in an ad campaign at least last year, I'm not sure if it still is, with the little butterfly.

它的广告宣传做得很大，至少在去年是这样的，我不确定它现在还是不是，它这里有一个小蝴蝶。

麻省理工公开课 - 化学原理课程节选

We in religious studies tend to like these terms, AD rather than BC, Before Christ, and AD, because AD actually stands for Anno Domini, in the year of our Lord.

在宗教研究中我们喜欢用这两个术语，而不用BC，即“基督前“和，因为AD其实是Anno，Domini的缩写，即“主的年份“

耶鲁公开课 - 新约课程节选