英语时差:听力损伤—怎样避免慢慢变聋？
The big deal is that it doesn’t matter what you’re listening to…music, a podcast, even standing near a loud lawnmower or watching fireworks.Noise that’s too loud damages cells inside the ear, called hair cells. They translate sound into electrical signals that get sent to the brain. Damage to many of these cells and your hearing starts to go. OK,but how do you know if something is too loud? If you’re standing near someone, about an arm’s length away, and you can’t hear what they’re saying because whatever you’re listening to is too loud, or noise in the background is too loud –that’s how you know when sound is too noisy. All right,I get it.So I'll turn down the volume of my ipod. Good.So how do you sound on the podcast? Not too bad,even a little loud.
