马特·威廉斯：教授，这里真的是一个死胡同！
威廉斯教授说，生活方式的改变正逐渐引发严重的健康问题，这些问题破坏了疾病控制的进程。
Professor Williams said lifestyle changes were building up serious health problems that could undermine recent advances in the control of disease.
在研究所研读时，曾担任过加州大学生物化学教授约翰·威廉斯博士的助教。
As I was a graduate student, I worked as a research assistant for Dr. John Williams, Professor of biochemistry, University of California.
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