In-earphones like Etymotic's ER6 go deep into the ear canal.
像音特美 ER6 这样的内置式耳机可以深入耳道。
2
Cell phones belong in your pocket not glued to your ear.
手机应该放在你的包里，而不是粘在你的耳旁。
3
But cell phones' explosion in the marketplace, and users' tendency to wear them close to the body and hold them repeatedly to the same ear, have led scientists to take a second look.