The WHO's Phase 5 threat warning signals that a global pandemic could be imminent, but has yet to develop, with human-to-human transmission occurring in many geographical locations.

VOA: standard.2009.04.30

In this worldview, institutions--human institutions evolve only slowly over time and cannot be altered by abrupt human interventions.

在这个世界观里,制度尤其人文制度,发展得非常缓慢,而且不会被突然的人为干预改变

耶鲁公开课 - 美国内战与重建课程节选

In this worldview, institutions--human institutions evolve only slowly over time and cannot be altered by abrupt human interventions.

在这个世界观里,制度尤其人文制度,发展得非常缓慢,而且不会被突然的人为干预改变

耶鲁公开课 - 美国内战与重建课程节选