We're going to look to some extent today and mostly next Tuesday at the roots and origins of an anti-slavery ideology, a growing anti-slavery ideology in its many layered forms.

今天讲一部分内容,下周二我们重点会讲到,反奴隶意识形态的根基,那是一个蔓延在许多阶层中的,反奴隶制意识形态

耶鲁公开课 - 美国内战与重建课程节选

The explosive recent growth in the cultivation of another oil seed, soyabean, has led to an onslaught on Brazil's dryland cerrado savannah, which is often disregarded as a forest, though it contains two-thirds as much carbon as the rainforest, mostly in its roots.

ECONOMIST: Seeing the wood