Katz词根词缀

The catch, says David L. Katz, director of Yale University's Prevention Research Center, is that exactly how much chocolate is needed for a health benefit isn't known.'

耶鲁大学预防研究中心（Yale University’s Prevention Research Center）主任大卫·卡茨（David L.Katz）表示，问题在于具体该摄入多少巧克力才对人体健康有益还不清楚。

Artur Katz, an oncologist in the team attending the former president, says his general condition is very good.

Artur Katz是参与治疗前总统医疗小组的肿瘤医生，他说，卢拉的病情大体上不错。

Roger Katz, an allergist at the University of California at Los Angeles, School of Medicine, says the results are good news for people who know allergies run in the family.

加州大学洛杉矶分校医学院过敏症专家罗杰·凯兹（Roger Katz）称研究结果对家族过敏史研究者来说是个好消息。