He has developed several prototypes of hand-cleaning devices that can be mounted on walls, as well as a portable, battery-operated model the size of a large electric toothbrush.

他发明了好几种洁手装置的原型机，这些机器可以悬挂在墙上，跟那种便携式的电动模型一样，大小相当于一支较大的电动牙刷。

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Most health care-associated infections are preventable through good hand hygiene - health-care workers cleaning hands, at the right times and in the right way.

通过做到良好的手卫生——卫生保健工作者在正确的时候以适当的方法洗手，大多数卫生保健相关感染可得以预防。

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Buying clothes that don't require dry cleaning, or hand washing them yourself, can reduce your exposure to this chemical.

如果你购买不需要干洗的衣物，或自己手洗它们，就能减少你和这种化学物质接触的机会。

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This means that when properly cared for (read: dry cleaning or hand-washing), silk bedding can last for many years.

WSJ: Better Beauty Sleep