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。
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.
我们都必须面对不同的挑战，一方面要面对堆满果盘和面包圈的办公室，另一方面则要关注身体的危害和以及工作的安全性。
We all face challenges, for some it's an office full of candy dishes and donuts and for others it's about physical danger and hardhats are involved.
由于办公室和住家往往通风不良，这些化学物质会愈积愈多进而成为危害健康的物质。
As offices and homes often have inadequate ventilation, these chemicals can build up to become health nuisances.
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