In today's class I'm going to talk about marine archaeology, the branch of archaeology focusing on human interaction with the sea, lakes and rivers.

在本节课程中，我将谈论考古学的一个分支——海洋考古学，探究的是人类和海洋、湖泊和河流的互动。

As Yunnan is located far inland, it is said the people here sometimes call this lake the Erhai Sea, to express their yearning for the distant ocean.

据说是因为云南深居内陆白族人民为表示对海的向往所以称这个湖为洱海。