The disease develops more quickly over a few weeks or months in people infected with trypanosoma rhodesiense.

VOA: special.2010.01.04

Instead he develops a highly intricate theory of how he's going to use slavery to save black people.

但他发明了一套非常复杂的理论,是关于如果通过奴隶制解放黑奴的

耶鲁公开课 - 美国内战与重建课程节选