n.麦克风；扩音器
He is talking into a microphone. 他正在对着麦克风讲话。
Plug in the microphone or no one will hear me. 请把麦克风插上，不然没人听得到我的声音。
He gave a tap at the microphone before speaking. 他在讲话前先轻叩了一下扩音器。
麦克风
