There's a famous Harvard Business School study on a woman named Heidi Roizen.
哈佛商学院的一个著名研究是有关于一位叫海蒂·罗森的女性。
Floss your teeth The gerontologist Dr Michael Roizen claims that flossing your teeth every day can add six years to your life.
用牙线清洁牙齿。老年医学家迈克尔罗伊森博士称每天用牙线清洁牙齿能多活6年。
In 2002 — not so long ago — a professor who was then at Columbia University took that case and made it Howard Roizen. And he gave the case out, both of them, to two groups of students.
在2002年——就是不久前——当时在哥伦比亚大学的一位教授接了这个案例，把它改成霍华德·罗森。
In 2002 — not so long ago — a professor who was then at Columbia University took that case and made it Howard Roizen. And he gave the case out, both of them, to two groups of students.
在2002年——就是不久前——当时在哥伦比亚大学的一位教授接了这个案例，把它改成霍华德·罗森。
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