He speaks into a loud speaker.

他对着麦克风讲话。

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It's what allows us to pick out the words from just one speaker even when we're in a room full of other voices that are just as loud.

鸡尾酒会效应指的就是，我们可以从一屋子的杂音中分辨出某些言语，即使它们和周围的声音一样嘈杂。

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A 747 was halfway across the Atlantic when the captain got on the loud speaker.

一架747客机正在跨越大西洋时，喇叭里传来了机长的声音。

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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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Asda have introduced a loud speaker system called Space Hog around its disabled car park paces which goes off whenever someone parks in one of these spots.

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Along the bottom edge, you'll find the micro-USB port next to a single speaker that's pleasingly loud -- we only had to hit the middle settings for a decent playback volume.

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