新奇事件簿 縮短聽音樂的時(shí)間

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The World Health Organisation (WHO) is worried that 1.1 billion teenagers and people in their twenties andearly thirties are damaging their hearing by listening to loud music. It says nearly half the young peoplein middle- and high-income countries risk hearing loss because of the "unsafe use" of personal music players, including smartphones. Loud music in nightclubs, bars and at sporting events also increases the risk. The WHO recommends a safe limit of listening to music for just one hour a day. The WHO director for injuryprevention, Dr Etienne Krug, told the BBC that: "What we're trying to do is raise awareness of an issue that is not talked about enough." He said hearing loss is easily preventable.

世界衛(wèi)生組織擔(dān)心由于大音量音樂，全球11億青少年，20多歲以及30歲出頭的聽力正在受到損害。該組織稱在中高等收入的國(guó)家中，將近一半的青少年更容易造成聽力損傷，這是因?yàn)槿藗儧]有正確使用音樂播放器，包括智能手機(jī)。夜總會(huì)、酒吧以及體育比賽的大音量也會(huì)增加這一危險(xiǎn)。世界衛(wèi)生組織認(rèn)為每天聽音樂的時(shí)間應(yīng)該限制在1小時(shí)。世衛(wèi)組織傷害預(yù)防司司長(zhǎng)Etienne Krug博士對(duì)BBC說：“我們正在幫助人們?cè)黾訉?duì)這一嚴(yán)峻問題的意識(shí)，這一問題非常嚴(yán)重。”他說聽力問題可以很容易地得到預(yù)防。

Dr Krug said keeping the volume down and limiting the use of personal audio devices to less than one hour a day would save a lot of people's hearing. However, he also said that, "even an hour can be too much if the volume is too loud". Ralph Holme, a biomedical researcher, explained how loud noise can damage ears. Hesaid: "Loud sounds damage your hearing by killing off thousands of little hair cells in the inner ear. Thecells detect different pitches of sound through vibration…but they are very fragile and if they vibrate too much due to loud sounds for too long, they get damaged and die." He warned that: "The problem is they don't grow back and the ear can no longer detect sound."

Krug 醫(yī)生說降低音量，把每天使用音樂設(shè)備的時(shí)間降低到1小時(shí)將幫助很多人擁有健康的聽力。但是，他還說“如果音量太大，一小時(shí)的時(shí)間也是非常長(zhǎng)的。”生物醫(yī)藥研究員Ralph Holme向我們解釋了大音量是如何損害我們的聽力的。他說：“大音量能夠殺死內(nèi)耳中的上千個(gè)毛細(xì)胞。這種細(xì)胞能夠通過震動(dòng)來識(shí)別音量的高低，但是這種細(xì)胞非常脆弱，長(zhǎng)期大音量將使它做大幅度的震動(dòng)，那么它將受到損害，直至死亡。他警告說：“關(guān)鍵是它將不會(huì)增長(zhǎng)，并將無法再次識(shí)別聲音。”