However, there were much more activities in ancient times than what we have today, from which we can trace the course of a gradual evolution.

而在历史上，清明节的内容则比今天多得多，这里也有一个逐渐衍变的过程。

youdao

The archive features multimedia Tours, interactive time lines that trace the evolution of mapping, and over 500 irreplaceable maps that trace the course of history.

这份档案文件的特点是拥有多媒体游览，并且利用互动式的时间轴来演示制图的演化，而且收录了超过500张在历史考察中具有不可取代地位的地图。

youdao

The characters are of course fictional, so those with a fondness for history need not trouble themselves trying to trace them out.

这些人物当然是虚构的，所以那些喜欢历史的人不必费心去寻找他们。

youdao

The shipping newspaper Lloyd's List said it had been able to trace the course of the Concordia though information from satellites.

BBC: Costa Concordia cruise ship captain 'went off course'