Galilee is a distinct region with geologic features forming boundaries with its neighbors.

加利利是一个独特的地区， 其地质特征与邻国形成了边界。

Today I want to talk about a way in which we are able to determine how old a piece of land, or some other geologic feature is - dating techniques.

今天我想谈谈一种我们能够确定一块土地或其他地质特征的年龄的方法——测年技术。