大家都认识到这些化石的价值极其珍贵，但这些因素并不能解释这个有趣的问题：为什么在一个特定的地点会如此集中地出现即将临产的怀孕鱼龙群呢?。

But these factors do not account for the interesting question of how there came to be such a concentration of pregnant ichthyosaurs in a particular place very close to their time of giving birth .

youdao

You see, they worked with the student's teacher and they had to do a little bit of history, something about the economy, a little bit of politics, and places to visit, and to focus on a festival because the Star Festival focuses on Tanabata.

你看，他们咨询了老师,查询一些历史资料，了解相关的经济知识，一点点政治状况，和参观地点，并集中介绍一个传统节日,因为“七夕节“软件集中在日本的七夕节上。

麻省理工公开课 - 媒体、教育、市场课程节选