There was an informal example the lecturer used, so I can't remember the exact details.

演讲者随意举了一个例子，所以具体细节我不太记得了。

youdao

Our style is informal, sporty and classic with distinctive details, which are carefully selected and created for a modern consumer who keeps up with the fashion trends.

我们的风格是非正式，轻便和经典的，其中带有独特的细节处理。这些款式的设计都是经过小心的收集，保持最时尚的设计趋势。

youdao

Background and details are given in an informal 12-page document dated 16 October 2007 made available by UNESCO's International Basic Sciences Programme (IBSP) to the UNESCO General Conference.

UNESCO: Small Island Developing States

Although she presented it in a very casual and informal fashion, as she enthused her way through the details of it, I started to suspect that she was taking it more seriously than I had initially appreciated.

FORBES: What type of business person believes in personality tests?