奇速英语

The WHO（世界卫生组织）said that a billion young people are damaging their hearing with loud music. Nearly half of young people in rich countries listen to "unsafe" levels of music. The WHO said a safe time is to listen for one hour a day. The WHO said people do not talk about this problem enough. People can stop hearing loss.

Turning the sound down and listening for an hour a day can reduce hearing loss. The WHO said that, "even an hour can be too much if the sound is too loud". Loud sounds damage your hearing. They kill small hair cells in our ears, the cells help us to hear. These cells break easily. Loud noise kills them forever, they never grow back.

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