They keep our air clean, reduce noise pollution, improve water quality and provide food and building materials.
他们保持我们的空气清洁，减少噪音污染，改善水质，提供食品和建筑材料。
In China, the government is trying to solve not only air and water pollution problems but also noise pollution problems.
在中国，政府不仅试图解决空气和水污染问题，还试图解决噪音污染问题。
Examples range from contamination of the food or water supply, to high levels of air or noise pollution, a chemical accident, a disease outbreak or a natural disaster.
这方面例子的范围包括从食物或水供应的污染，到空气或噪音高度污染、化学事故、疾病暴发或自然灾害。
Environmentalists condemned the decision to allow drilling, saying it would generate industrial levels of noise in the water and pollute both the air and surrounding water.
环保人士谴责允许钻井的决定，说它将在水中造成工业水平的噪音，污染空气和周围水域。
Planes would fly in from the north-east, primarily over water, greatly reducing the number of homes that would be affected by aircraft noise.
飞机将在东北部起降，主要途经水面，受飞机噪音污染的家庭数目由此极大地减少。
"It is based on acoustics and temperature, so it basically picks up the noise of the water as it runs through the pipe, " Dr Hendrickx explained.
它的工作原理基于声音和温度，总体上是采集水流过水管时的杂音，同时也记录下温度的变化。
And watched three-spined stickleback fish hunt water fleas, to the accompaniment of either white noise calibrated to match the noise level of speedboats or a silent track as a control.
并控制三刺鱼在跟快艇噪音程度相当的白噪声中，或者完全安静的环境之下，观察它们捕食水蚤的情况。
After numerous nights of searching, they figured out the noise sounded like something flapping in the water and it came from the bathroom pipe on the first floor.
经过无数个晚上的调查，他们发现那个声音听起来像什么东西在水里拍打，来自一层楼的浴室的水管。
Hundreds of birds fly in a sunny blue sky. The only sounds are bird calls and the soft noise made by tall grasses as the water slowly moves them.
无数的鸟在阳光明媚的蓝天中飞翔，这里你只能听到鸟的叫声以及当水流缓慢流经草的时候，这些草所发出的柔和的声音。
Nevertheless, they all emphasize that pollution of air and water, noise and congestion, and the mechanization of the work process are very real and very serious problems.
然而他们一致强调：水、空气、和噪音污染，交通拥挤，机械性的工作问题的确是很严重的现实问题。
Due to the small scale of small towns and unreasonable industrial structure, there are pollutions of water, gas and noise.
但由于小城镇自身的规模偏小，产业结构不合理等诸多原因，造成的水、大气、噪声等污染依然存在。
The fish in the water is silent, the animal on the earth is noisy, the bird in the air is singing, but Man has in him the silence of the sea, the noise of the earth
水里的游鱼是沉默的，陆地上的动物是喧闹的，空中的飞鸟是歌唱着的；但是人类却兼有了海里的沉默，地上的喧闹，与空中的音乐。
And presently I heard a noise as of OARS coming to me across the water and then, as it were, a weak cry.
不一会儿我便听见一个声音，像是桨在水面上向我划过来的声音，接着，我又听见了一种仿佛是微弱的哭泣的声音。
The pollution of the environment includes the air pollution, water pollution, garbage wastes contaminative, the soil pollution is contaminative with the noise pollution.
环境污染包括大气污染，水污染，垃圾废弃物污染，土壤污染和噪声污染。
In my city, there're some pollutions. Among them, the most serious one is the air pollution and others are water pollution and noise pollution.
我在的城市有很多污染。在这些污染中，最严重的当属空气污染；其他的污染还有水源和噪音污染。
In view of the factors that how to reduce significantly the exhaust temperature, prevent water pour backward and reduce the exhaust noise, the present theses presented a water spraying silencer.
针对如何大幅度降低排气温度并兼顾防治海水倒灌和削减排气噪声，本文提出了一种水喷淋消声器设计方案。
Swirl pump is compact, light weighted and no speed-adjusting device needed, no friction except bearer, low noise, no water and no oil in the output air.
旋涡气泵结构紧凑，体积小，重量轻，不需变速装置，除轴承外其它部位没有直接接触磨擦，噪音低，送出的气源无水无油。
Above the noise of the crickets, cicadas, and peeping frogs, water babbled and gurgled nearby.
在一片蟋蟀、知了、偷窥的青蛙发出的噪音中，潺潺的流水在附近汩汩流淌。
The new Type 62-1 model had air conditioning, a larger fresh water tank, stabilizer fins, and much reduced engine noise.
新的62-1型有了空调，较大的淡水箱，稳定鳍和大量减少了发动机噪音。
The drain was a big black hole, and the water went through it very fast, making a loud noise.
这个排水管是一个大黑洞，水在排水管中湍急地流过，发出很大的声响。
But when Dingbo crossed the creek, he splashed the water in all directions with a lot of noise.
定伯自己过河的时候，却是水花四溅，响声很大。
Such issue as clean air, pure water and freedom from noise pollution were not important public concerns.
当时，诸如空气清新、水质洁净无噪声污染之类的问题，都不是公众什么了不起的关切所在。
In the last several decades, our earth has been extremely polluted, such as air pollution, water pollution, noise pollution and so on.
在过去的几十年里，我们的地球已经极度污染，比如大气污染，水污染以及噪音污染等等。
In the last several decades, our earth has been extremely polluted, such as air pollution, water pollution, noise pollution and so on.
在过去的几十年中，我们的地球已经极度污染，例如空气污染，水污染，噪音污染等等。
A drop of water falls, then another, and then the rain falls on the leaves of the trees and the iron roofs with a noise reminding us of the beating of drums.
风吹打在脸上，雨开始一滴一滴地下着，雨滴打在树叶和铁皮屋顶上，就像敲锣打鼓的声音。
A drop of water falls, then another, and then the rain falls on the leaves of the trees and the iron roofs with a noise reminding us of the beating of drums.
风吹打在脸上，雨开始一滴一滴地下着，雨滴打在树叶和铁皮屋顶上，就像敲锣打鼓的声音。
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