VOA慢速英语:美国公司担心办公室有空气传播病毒的风险

airborne–adj. moving in or carried through the air

transmission–n. the process of sending something from one place to another or between people

due diligence–n.(legal) the care that a reasonable person takes to avoid harm to others or their property

filtration–n. the process of removing pollutants from the air or water

ventilation–n. a system that lets fresh air flow through a building