她说：“我听到了行李箱在地面滚动的声音、有钥匙在口袋里叮当作响、还有人们鞋底踩着冰碴发出的咯吱声。”
"Suitcases rolling on the ground," she says, "Keys clinking in pockets. People with ice under their shoes."
一种称为“上半规管裂综合征”（下文称SCDS）的内耳道疾病会放大身体每处地方活动的声音，即便是眼球滚动的声音。
A disorder of the inner ear called superior canal dehiscence syndrome causes every sound within the body to be amplified, even the movement of one's eyeballs, all the time.
LED设备可以滚动播放字母或者简单的图片，而扬声器可以回放音乐、声音或者事先由朋友家人录制的讯息。
The display can show scrolling text or simple images and the speakers can replay music, sounds or pre-recorded messages from friends or family.
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