通过使用个人保护装置以及噪音控制工程，减少接触噪音时间。
reducing exposure (both occupational and recreational) to loud noises by using personal protective devices and by engineering noise control.
据美国国家科学院医学研究所所称，在美国将减少接触含动物脂肪的饮食。
According to the Institute of Medicine of the National Academies in America it will reduce exposure to dietary pollutants that are carried in animal fats.
在接收信号好的地区使用电话，也会减少接触量，因为信号好，电话传输功率会减小。
Using the phone in areas of good reception also decreases exposure as it allows the phone to transmit at reduced power.
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