"I think for the industry as a whole, it's very interesting and potentially important because there are a lot of publishers who haven't yet developed paid-for models, who are looking at a cyclical and structural decline in advertising revenues,"

VOA: standard.2009.12.05

But, unfortunately, there aren't good animal models for many of the diseases that we'd like to study.

但是很遗憾的是,对于很多我们想要研究的疾病,并不能找到合适的动物模型

耶鲁公开课 - 生物医学工程探索课程节选