我们是怎么听到声音的?How can we hear? It’s because we have ears, of course. But do you know how our ears work?The ear has three parts: the outer ear (外耳), the middle ear (中耳), and the inner ear (内耳). They all work together to help us hear.
中报二十一世纪(北京)传媒科技有限公司版权所有,未经书面授权,禁止转载或建立镜像。 主办单位:中国日报社 Copyright by 21st Century English Education Media All Rights Reserved 版权所有 复制必究 网站信息网络传播视听节目许可证0108263 京ICP备2024066071号-1京公网安备 11010502033664号