They carved the first hiking trail to the top of Mt.Whitney, the highest mountain in the continental United States and they built the first museum in the National Park system.

VOA: standard.2009.11.25

There's a physicist hiking on this mountain.

一个物理学家在爬山

耶鲁公开课 - 基础物理课程节选

There's a physicist hiking on this mountain.

一个物理学家在爬山

耶鲁公开课 - 基础物理课程节选