Witkin could only see his fellow man as masked and saw himself in the same way.

威金只能看到他身边的人戴着面具，并且以同样的方式看着他。

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So was Andrew Witkin, a senior computer scientist with the animation studio Pixar.

他是一位科学家，却拥有动画工作室皮克斯。

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"The truth is that stress goes up because women add all their new roles to their old roles without crossing anything off their list, " said Dr. Witkin.

CNN: Holidays bring on emotional hazards