噪音英語怎麼寫的

Noise Pollution 噪音汙染Noise is among the most pervasive pollutants today. Noise from road traffic, jet planes, jet skis, garbage trucks, construction equipment, manufacturing processes, lawn mowers, leaf blowers, and boom boxes, to name a few, are among the audible litter that are routinely broadcast into the air. Noise negatively affects human health and well-being. Problems related to noise include hearing loss, stress, high blood pressure, sleep loss, distraction and lost productivity, and a general reduction in the quality of life and opportunities for tranquillity. We experience noise in a number of ways. On some occasions, we can be both the cause and the victim of noise, such as when we are operating noisy appliances or equipment. There are also instances when we experience noise generated by others just as people experience second-hand smoke. While in both instances, noises are equally damaging, second-hand noise is more troubling because it has negative impacts on us but is put into the environment by others, without our consent. Noise pollution is not easily defined. Part of the difficulty lies in the fact that in some ways it is different from other forms of pollution. Noise is transient; once the pollution stops, the environment is free of it. This is not the case for chemicals, sewage, and other pollutants introduced into the air, soil, or water. The definition of noise itself is highly subjective. To some people the roar of an engine is satisfying or thrilling; to others it is an annoyance. Loud music may be enjoyable or a torment, depending on the listener and the circumstances. Broadly speaking, any form of unwelcome sound is noise pollution, whether it is the roar of a jet plane overhead or the sound of a barking dog a block away. The actual loudness of a sound is only one component of the effect it has on human beings. Other factors that have to be considered are the time and place, the duration, the source of the sound, and whether the listener has any control over it. Most people would not be bothered by the sound of a 21-gun salute on a special occasion. On the other hand, the thump-thump of a neighbour's music at 2 a.m., even if barely audible, could be a major source of stress. The decibel (dB) （分貝） is a measure of sound intensity; that is, the magnitude of the fluctuations in air pressure caused by sound waves. In fact, an increase of just 3 dB means twice as much sound, and an increase of 10 dB means ten times as much sound. A sound pressure level of 0 dB represents the threshold of hearing in the most sensitive frequency range of a young, healthy ear, while the thresholds of tickling or painful sensations in the ear occur at about 120 to 130 dB. There is fairly consistent evidence that prolonged exposure to noise levels at or above 80 dB can cause deafness. The amount of deafness depends upon the degree of exposure. Noise can cause annoyance and frustration as a result of interference, interruption and distraction. Exposure to noise is also associated with a range of possible physical effects including: colds, changes in blood pressure, other cardiovascular changes, increased general medical practice attendance, problems with the digestive system and general fatigue.。

sound,noise和voice這三個名詞都可表示“聲音”，但是，它們表示的“聲音”並不相同。

1. sound作“聲音”，“響聲”講時，可以指人或動物發出的聲音，或物體碰撞的聲言。這個詞的使用範圍很大。可以說，大自然的任何“聲音”都可以用sound。例如：

At midnight he heard a strange sound.半夜裡他聽到一種奇怪的聲音。

Light travels much faster than sound.光的傳播速度比聲音快得多。

2. noise意為“噪音”、“喧鬧聲”，常指不悅耳、不和諧的嘈雜聲。例如：

Don't make any noise！ 別吵鬧！

The noise wakes me up.噪音吵醒了我！

The noise of traffic kept him awake.車輛的喧鬧聲使他睡不著。

3. voice一般指人的聲音，說話、唱歌。談笑都可用voice。sound和noise不僅能指人的聲音，還可以表示別的動物發出的聲音；而voice除了有時可指鳥的聲音外，很少表示其它動物的聲音。例如：

The girl has a beautiful voice.那女孩嗓音很美。

They are talking in low voices.他們正小聲交談。

When the teacher came into the classroom,our monitor spoke in a loud voice,“Stand up!”

We know the sounds of cities are loud enough to cause great harm to people's hearing in the china. One person out of twenty has got some hearing loss. And all over the world the situation is getting worse and worse all the time since the noise increases with the population.

With the development of machines, noise has also increased greatly. We live surrounded by loud planes, trucks and electric tools.

TV sets and radios add up to 90 or J00 decibels, a certain unit used to measure the loudness of sound. A normal dialogue reaches 55 decibels; a plane goes to 100, and an ordinary train, reaching the station, can be twice as loud as the loudest plane. Disco music reaches about 118. At decibels the ear stops hearing sound, and pain starts. How terrible if things go on like this!

噪音汙染

眾所周知，在中國，城市巨大的噪音對人們的聽力造成了極大的損害。每20個人中就有一個有不同程度的聽力損傷。就世界範圍看來，因為噪音隨著人口的不斷增長，而越來越嚴重，這種情況也愈發惡化。

隨著機械製造業的發展，噪音汙染也日益加劇。我們生活在震耳欲聾的飛機、卡車和電器中。

電視和收音機加起來甚至達到90至100分貝（分貝：一種測定聲音

大小的特定單位）。人們普通的對話是55分貝；飛機飛行中為100分貝；而一列普通的火車在到站時音量能夠達到最嘈雜的飛機的兩倍；迪斯科音樂更是高達118分貝。到達分貝耳朵就會喪失聽覺，感到痛苦。這樣下去，該是一件多麼可怕的事情啊！