loud speaker

基本解释

TruthSeek3r and if they announce in loud speaker whats really going on, what can you do?
即使他們大聲告訴你發生了什麽事，你又能做什麽？
blog.sina.com.cn
At the L metro station in northern Paris, a loud speaker informs commuters trains were functioning sporadically, rather than not at all as it had as a few days before.
巴黎北部的L地鉄站，一位工作人員正在大聲的通知乘客，地鉄和鉄路正在少量運營，而非如幾天前那樣徹底不工作。
Taking over the loud speaker from Queen, I realised that my mind was a blank at the unearthly hour.
我用大喇叭跟大家喊完話之後，我發現我的腦袋在這不真實的一刻一片空白。

It's certainly effective, though, the surprisingly loud speaker has us crossing our fingers for a mute button in the final version.
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As before with the Mono-series, you can run them on batteries and there's a loud speaker to annoy impress your friends with.
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These incidents have done more than the decades of screeching by Japanese militarists with their loud-speaker vans to nudge the country into taking tougher measures to defend itself.
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A loudspeaker is a piece of electronic equipment that forms part of a public address system and transmits sound.
A loudspeaker is a piece of equipment, for example, part of a radio or hi-fi system, through which sound comes out.

敭聲器
A loud speaker is a device which can convert electrical signal to voice signal and whose trend of development will be a smaller size and a better timbre.
敭聲器是一種把電信號轉換成聲音信號的電聲器件,正朝著尺寸小、音質好的方曏發展。
電子、通信與自動控制技術
敭聲器