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英文字典中文字典相关资料:


  • What is Sound and How do we Hear it? - Lets Talk Science
    Learn how sound travels in waves and how it is measured in this backgrounder
  • What is sound? - BBC Bitesize
    What is sound? Learn how about different types of sound and how they are made in this BBC Bitesize KS1 Science guide
  • SOUND definition in American English | Collins English Dictionary
    39 senses: 1 a a periodic disturbance in the pressure or density of a fluid or in the elastic strain of a solid, produced by Click for more definitions
  • What Is Sound? - BYJUS
    What Is Sound? A sound is a form of energy, just like electricity, heat or light Sound is one of the important senses of the human body Some sounds are pleasant, and some are annoying We are subjected to various types of sound all time Sound waves are the result of the vibration of objects Let’s examine some sources of sounds like a bell When you strike a bell, it makes a loud ringing
  • SOUND | meaning - Cambridge Learners Dictionary
    SOUND definition: 1 something that you hear or that can be heard: 2 how something seems to be, from what you have… Learn more
  • sound noun - Definition, pictures, pronunciation and usage . . .
    Definition of sound noun in Oxford Advanced Learner's Dictionary Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more
  • sound - WordReference. com Dictionary of English
    sound′a•ble, adj 1 Sound, noise, tone refer to something heard Sound and noise are often used interchangeably for anything perceived by means of hearing Sound, however, is more general in application, being used for anything within earshot: the sound of running water Noise, caused by irregular vibrations, is more properly applied to a loud, discordant, or unpleasant sound: the noise





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