Research on Amber

00:00:00,360You will hear a talk about amber, the formation of amber, and its applications in different fields. First, you have some time to look at questions thirty-one to forty. 00:00:20,680Now listen carefully and answer questions thirty-one to forty. 00:01:00,960Tonight, I'm going to present an overview of the research on amber. Okay, I'll start by giving a brief introduction about amber, then talk about the formation of amber, and then describe amber's applications in different fields. Firs...