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物理学将和谐的声音称为乐音,将不和谐的声音叫作噪声。生理学则将对人体有害或人们不需要的声音称为噪声。城市中的噪声,主要可分为工业噪声、交通噪声、建筑施工噪声和生活中的噪声四类。噪声污染,特别是交通、建筑工地、家庭装修等产生的噪声,通常给人以烦躁的感觉,已成为许多城市中最令人头痛的扰民问题。长期生活在噪声超标的环境中,人们身心俱疲。
Physics calls a harmonious voice the music, and the discordant voice the noise. Physiology calls noise that is harmful to the human body or unwanted to people. The noise in the city can be divided into four categories: industrial noise, traffic noise, construction noise and life noise. Noise pollution, especially noise generated by traffic, construction sites and home decoration, often gives people an irritating feeling and has become the most disturbing nuisance in many cities. Long-term living in the environment with excessive noise, people are physically and mentally exhausted.