But studies have shown that high-efficiency particulate air (HEPA) filters on most jets today can capture 99.97% of bacterial and virus-carrying particles.

但研究表明，如今大部分飞机上的高效微粒空气过滤器能够滤掉99.97%的细菌和病毒微粒。

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The letters H-E-P-A represent the words High Efficiency Particulate air. HEPA filters capture almost all particles in the air that are zero point three microns in size or larger.

HEPA四个英文字母代表High Efficiency Particulate Air。高效微粒空气处理器能够捕捉到空气中几乎所有的微粒，即0.3毫米或者大一点的微粒。

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Plastic mattress covers help keep dander out of beds, and room air cleaners equipped with high efficiency particulate air (HEPA) filters can remove dander from the air.

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High Efficiency Particulate Air (HEPA) filters, which usually last a year.

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The recirculated air usually passes through high-efficiency particulate (HEPA) filters before delivery into the cabin.

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