奇速英语

Experts say that more than 1 billion(十亿) young people cannot hear well.

They are between 12 and 34 years old. Young people often hear loud noises in their ears. Their hearing test results(结果) are not good.

Experts know why this happens(发生). Young people always wear their headphones(耳机). They go to concerts. The music is often too loud. Sometimes, music in restaurants is loud, too.

Sometimes we can lose hearing when we hear something very loud only once. Loud noise is harmful to our ears. Once the hearing is damaged, it is difficult to fix it.

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