(Speaking) "Scientists in their institutes feel like serfs who work for completely ignorant people who do not know what they are talking about,".

VOA: standard.2010.02.03

It's not the case that some people are born to be kings and others are born to be serfs.

并不是一些人天生就是君王,而另一些人天生就是奴隶。

耶鲁公开课 - 公正课程节选

They were the antecedents of the Serfs, which we will see later on in medieval history in europe.

他们是农奴的祖先,这段历史我们在中世纪的欧洲会涉及

耶鲁公开课 - 古希腊历史简介课程节选

They own, by the way, 40,000 serfs, own 40,000 serfs, just these 200 to 300 families.

他们共拥有四万农奴,两三百个家庭就拥有四万农奴

耶鲁公开课 - 欧洲文明课程节选

You could gamble serfs, real people.

你可以押上农奴

耶鲁公开课 - 欧洲文明课程节选

Serfs who are compelled to work the land, or in some places even slaves, well, they have no incentive, put aside the question even of capacity, to invest capital for the purpose of improving the size and quality of the their crops, their trees, their vines.

那些被强迫耕种土地的农奴,或者是那些在其他地方直接成为奴隶的人,刨除能动性因素,农场主们,没有任何理由投资钱财,去改善他们农作物,果树和葡萄,的种植规模和品质

耶鲁公开课 - 古希腊历史简介课程节选