He was just amazed at these Americans, how they just moved all the time, and they were just so full of hope all the time.

他只是惊奇于这些美国人,如何一直持续发展,不断前行,并且一直充满希望

耶鲁公开课 - 美国内战与重建课程节选

If you keep going east you hit the Black Sea.

如果你一直向东前行就会来到黑海

耶鲁公开课 - 古希腊历史简介课程节选