You've all been immunized for Hepatitis B, would you be happy to hear that that's where your Hepatitis B vaccine came from?

你们都对乙型肝炎具有免疫力了,如果你知道你的乙型肝炎疫苗,是从何而来的话,你还会高兴的起来吗

耶鲁公开课 - 生物医学工程探索课程节选

For any one of us it costs $153 - $156 to be immunized.

对于我们来说,花费一百五十三到一百五十六美元,才能获得免疫

耶鲁公开课 - 生物医学工程探索课程节选