adj. 三词用於人和事物均可, 通常指不具有某种性质, 而不指具有某种性质. A silent film has no speech and a silent machine makes no noise. *silent影片没有言语, 而silent机器没有噪声. The opposite of reading silently (or to oneself) is reading aloud. 与reading silently（或to oneself）（默读）相对的是reading aloud（读出声来）. Quiet can mean silent *quiet可意为silent Quiet, silent and calm can all be applied to both people and things and generallyindicate the absence of a quality rather than the presence of something. *quiet, silent, calm
adj. 不绝於耳的交通噪音. the perpetual noise of traffic
n. 不要发出那种噪音,＇他愤怒地大喊. Stop that noise,' he cried out in exasperation. ｀
在市区内使用高噪音的打桩机器，每天最多可开动3小时；使用噪音较低的打桩机器，则每天最多可开动12小时。 Noisy piling machines may operate up to three hours a day in urban areas but quieter ones can work up to 12 hours.
政府已实施多项缓解措施，包括严禁飞机在深宵升降、对深夜飞越九龙人口稠密地区的抵港班机严加限制，以及规定使用较低噪音的飞机。 The government has implemented a comprehensive package of mitigation measures, including an absolute night-time curfew, tight restrictions on late evening arrivals over populated Kowloon, and insistence on the use of quieter aircraft.
按分贝计算，噪音强度可以从零(人耳所能感到的最低声音)到160分贝以上。 Measured in decibels,noise intensity can range from zero,the quietest sound the human ear can detect,to over 160 decibels.
这辆汽车的发动机噪音很小 This car engine runs very quietly.
那位年老多病的妇女说，噪声总使她心神不宁。 The ailing old woman says noise always puts her out.
令人头疼的噪音；战争前的那些紧张的日子；办公室里紧张的一天。 nerve-racking noise; the stressful days before a war; a trying day at the office.
防治噪声、电磁辐射、放射性污染。 Preventing noise, electromagnetic radiation, and radioactivity pollution?
(五)噪声、电磁辐射和放射性环境管理 Management of Noise, Electro-Magnetic Radiation and Radioactivity
到2008年城市建成区噪声基本达到国家标准。电磁辐射和放射性环境继续符合国家标准。 By 2008, the noise in the constructed urban areas should basically reach the national standard, the electric-magnetic radiation and radioactivity should be maintained complying with national standards.
此外，危险废物、工业固体废物、城市生活垃圾的收运、利用和处理机制有待进一步完善，噪声、电磁辐射与放射性环境管理还需加强。 Moreover, the mechanisms for the collection, transportation, recycling and treatment of hazardous wastes, industrial solid wastes and domestic refuse need to be improved. Control of noise, electric-magnetic radiation and radiological safety require more attention.
伯恩:(提高噪门)14.90美元，我不能再提了。 (raises his voice) $14.90, I can't go any further.
聒噪的精力旺盛的或者激昂演说的人。 a noisy and vigorous or ranting public speaker.
在通信系统中，由许多干扰源的串音（的总和）引起的噪声。参阅crosstalk。 In communications, the aggregate crosstalk from a number of interfering sources.
那噪音使他的情绪焦躁不安。 The noises rasped his feelings.
全港发展策略检讨的评估结果显示，不断城市化很可能会使空气质素和水质恶化，以及使噪音和废物处理设施不足的问题更为严重。 The assessment of the territorial development strategy showed that continuing urbanisation would be likely to aggravate air and water quality,intensify exposure to noise and overloads waste disposal capacity.
信号强度与噪音强度的比率。 the ratio of signal intensity to noise intensity.
发噪音器（或人）发出嘈杂声的东西，尤指在聚会上用来发出声响的设备如喇叭或铃铛 One that makes noise, especially a device such as a horn or rattle used to make noise at a party.
发出刺耳或粗哑的噪音 To make a harsh or raucous noise.
王平：当时，奇拉维特的入球令一向噪杂的河床体育馆的阿根廷球迷顿时安静下来，目瞪口呆地看着这位萨斯菲尔德队的守门页的精彩表演。 Wang Ping: At that time, Chilavert's shot made the Argentinean fans, who usually made the Riverbed Stadium noisy suddenly quiet down. They watched the wonderful performance of the Sarsfield's goalkeeper agape.
此外，在重建区或新发展区，对附近居民来说，建筑噪音也是特别令人关注的问题。 Construction noise is also a particular concern for residents living near redevelopment or new development sites.
吸声降噪 noise reduction by absorption
绿化降噪 noise reduction by foliage
吸声降噪 noise reduction by sound absorption
电机噪声的抑制 noise reduction of electrical machine
第四十七条 在已竣工交付使用的住宅楼进行室内装修活动，应当限制作业时间，并采取其他有效措施，以减轻、避免对周围居民造成环境噪声污染。 Article 47 Whoever makes indoor decoration and refitting in a residential building that is already completed and delivered for use shall do so in restricted hours and take other effective measures to mitigate or avoid producing environmental noise pollution to the neighbours.
2001年度城市区域噪声污染分级 Noise Pollution Levels of Urban Regional Noise Pollution
2001年度国控城市区域环境噪声等效声级比较 Comparison of Equivalent Regional Environmental Noise Level in State-Controlled Cities in 2001
改用串行协议，将产生较低的噪声，并提高可靠性。 By changing to serial protocols, less noise will be generated and reliability improved.
选择祖籍地的，或许是对宗亲祖辈怀有深情，也可能此地人文荟萃，名噪天下； One may mention the ancestral home, perhaps out of a deep sense of affection for the forefathers, or maybe it is a place that is world-famous for boasting many renowned personalities.