然而，这样的水对提高身体机能毫无用处，因为只有通过肺部才能将氧气吸入血液，从而被肌肉吸收。
Such water would be useless in improving physical performance, however, since the only way to get oxygen into the bloodstream so that it can be absorbed by the muscles is through the lungs.
纳米粒可以找到它们的方式——通过吸入进入人体器官，包括血液、肝脏和大脑。
Nanoparticles find their way into many organs in the body, including the bloodstream, liver, and brain, through inhalation.
小于2.5微米的悬浮微粒对人体的健康造成了最大的危害因为它们小到可以被吸入肺部深处，在某些情况下，还会进入血液中。
Aerosol particles smaller than 2.5 micrometers pose the greatest risk to human health because they are small enough to be breathed deep into the lungs and, in some cases, enter the blood stream.
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