DA

Dr Neil Da Costa, who presented his research on the Bloody Mary at a meeting of the American Chemical Society yesterday, said, "It´s a very complicated drink."

昨天，在美国化学协会的一个会议上，Dr Neil Da Costa 发表了他关于血腥玛丽的研究，说：“这是一种很复杂的饮料。”

I wouldn´t trust them in spite of all their la-di-da manners.

尽管他们处处显得很高雅的样子，我还是不相信他们。

The DA was certain she had the right man, but the evidence was thin.

这位地方检察官确信自己找对了人，但是证据却难以令人信服。

Da Vinci was methodical in his research, carefully recording his observations and theories.

达·芬奇作研究非常有条理，他仔细地记录下他的观察所得和理论。

Now most people know the da da da dah introduction.

现在大多数人都知道哒哒哒哒这个前奏。