Regular repeating actions such as sound waves, light waves, or radio waves have a certain frequency, or number of waves per second.
有规律的重复活动如声波、光波、无线电波都有一个特定的频率，或者说是每秒的波动次数。
What makes this interesting is that, just as light can be analysed as either waves or particles, the same is true of sound in some circumstances.
有趣的是，光恰好能像波或者粒子一样被解析，在相同环境，声音也是如此。
At the time, people believed that light waves, just as sound waves, ocean waves or shock waves, had to travel through a medium.
当时，人们认为，光波就像声波、海浪波或冲击波一样，它们的运行必须穿过介质。
And particles of sound, known as phonons, are just as susceptible to Heisenberg's uncertainty principle as particles of light (photons) -or, indeed, any other fundamental particle.
声音粒子，即声子，和光的粒子(光子)或者其他基本粒子，都受海森堡的不定性原理影响。
Pests may be controlled using mechanical or physical means, such as traps, light, or sound.
还可以通过机械或物理手段控制害虫，例如捕捉器，光照或声波。
A device, such as a part of a radio, television set, or telephone, that receives incoming radio signals and converts them to perceptible forms, such as sound or light.
接收器在诸如收音机、电视机和电话中的一种装置，可以接收传播的信号并将其转换成可接触的形式，如声音或光线。
It may also derive from the presence of environmental stressors such as prolonged exposure to elevated sound levels or bright light.
又或者是来源于环境刺激，比如说长期暴露在高强度的噪音或是强烈的光线当中。
He is not affected by the sound or light, as if some agency has taken care to protect him from their effects.
他没有受到那些声光的影响，好象某些力量在保护他免受伤害。
We transmitted the instructions by electronic mail. The word also means "to serve as a medium for the passage of something such as light, electricity, or sound""
我们用电子邮件传达指令。这个词还表示“作为通过某物的媒介，如光、电或声音等”
We transmitted the instructions by electronic mail. The word also means "to serve as a medium for the passage of something such as light, electricity, or sound""
我们用电子邮件传达指令。这个词还表示“作为通过某物的媒介，如光、电或声音等”
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