Welcome to Uncommon Knowledge, I'm Peter Robinson Joining me today, two colleagues of mine at the Hoover Institution Both are economists, Kenn Judd and John Taylor ... John Taylor also served for two and half, three years Four years Four years, essentially in the entire first term?

欢迎收看“非同寻常的知识，我是主持人皮特·罗宾逊,今天请到的是，我在胡佛研究院的两位同事,均为经济学家，肯·贾德和约翰·泰勒,约翰·泰勒曾经有两年半，三年,四年,四年，基本上整个任期内？

斯坦福公开课 - 经济学课程节选

HIV is a member of the family of viruses called retroviruses, and retroviruses all use RNA as their genetic material.

IV是一种逆转录病毒,所有逆转录病毒均以RNA作为遗传物质

耶鲁公开课 - 生物医学工程探索课程节选