I'm Steve Ember. Germany's attack on Poland and the start of World War Two in Europe presented a problem for Americans in September of nineteen-thirty-nine.

VOA: special.2011.05.12

That's a big problem and so can you protect these cells that you give to the recipient from attack by the recipient's immune system?

并且至关重要,那么你们想办法保护这些植入受体的细胞,使它们免受免疫系统的排异反应么

耶鲁公开课 - 生物医学工程探索课程节选

The problem with this is while he's stuck in there he has this screaming, horrific panic attack and then it makes his fear much worse.

这里的问题是，当他被困在这里时,他会患上令其尖叫与恐惧的恐慌症,这只会让他的恐惧感更加强烈。

耶鲁公开课 - 心理学导论课程节选