Definition
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sound
A sound is a vibration that travels through the air or another medium and can be heard when it reaches a person's or animal's ear.
声音是通过空气或其他介质传播的振动,当它到达人的或动物的耳朵时可以被听到。
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The sound of the waves crashing on the shore is very calming.
海浪拍打岸边的声音非常平静。
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She loved the sound of birds singing in the morning.
她喜欢早晨鸟儿鸣唱的声音。
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The sound of the bell signaled the end of the class.
铃声的声音标志着上课结束。