WE WERE just settling down for our flight when the captain's voice came over the PA system.
我们刚刚在飞机上坐好，扩音器中突然传来机长的声音。
In lieu of an alarm clock, sleeping crews are woken by music played over the PA system by Nasa staff on the ground.
代替闹钟唤醒宇航员的是由地面上的NASA工作人员通过PA系统播放的音乐。
Often they were outdoor shows, sometimes with no PA system at all, so I really had to learn how to project to be heard.
演出一般都是露天的，有时候甚至没有扩音装置，所以我必须学会在各种条件下让声音传到观众耳朵里。
Somewhere it was Christmas but it didn't feel like it to me - at least not until I heard the music piped through the PA system.
这个圣诞对我而言根本就不是圣诞-直到广播里响起了音乐。
Indoor Outdoor as School, Bus Station, District, Park etc required PA System.
学校、车站、小区、公园等需要公共广播播音的室内外场所。
While shopping in a supermarket, I heard over the PA system: "a wallet was found containing a large sum of cash but no identification."
我在超级市场里买东西，听见广播通知：“捡到一个钱包，里面有很多现金，但没有身份证明。”
The Elason PA system USES a network configuration rather than having all system elements connected to a central controller. This architecture gives real freedom in system design.
埃勒森公共广播系统采用网络结构，而不是把各个系统要素连接到一个中央控制器上，而这样的结构使得系统设计获得了真正的自由。
We'll be there in five minutes... will you please do me a favor? When you hear the sirens screaming and see the Lights flashing, will you announce over the PA system that there is not a fire?
我们将在五分钟内赶到…请你帮我一个忙好吗？当你听到警笛长鸣、看到红灯闪烁的时候，请你用PA系统宣布没有发生火灾。
We'll be there in five minutes... will you please do me a favor? When you hear the sirens screaming and see the Lights flashing, will you announce over the PA system that there is not a fire?
我们将在五分钟内赶到…请你帮我一个忙好吗？当你听到警笛长鸣、看到红灯闪烁的时候，请你用PA系统宣布没有发生火灾。
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