The blood tests are important, because many people underestimate their exposure to secondhand smoke, said Terry Pechacek, associate director for science in the CDC's Office on Smoking and Health.

因为很多人低估了二手烟的危害，所以验血很重要，CDC 吸烟与健康办公室自然科学合作负责人Terry Pechacek 说。

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He is the associate director for science in the White House Office of Science and Technology Policy.

VOA: special.2011.06.02

Karen Richardson in an Associate Director in the Office of Public Engagement.

WHITEHOUSE: African Women Entrepreneurs Visit the White House

Ronnie Cho is an Associate Director in the Office of Public Engagement.

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Gautam Raghavan is an Associate Director in the Office of Public Engagement.

WHITEHOUSE: Transgender Day of Remembrance