关于气候变化的讲座非常有信息量。

The lecture on climate change was very ___informative.

有许多来自不同行业的演讲，其中一些非常有信息量且有趣。

There were presentations from many different industries, some of them very ___informative and entertaining.

这部纪录片提供了关于古代历史的信息丰富的概述。

The documentary provided an ___informative overview of ancient history.