Pneumatic speaker
[电] 压气扬声器
🧩 词语组成解析
speaker
['spikɚ]
n. 说话者;演讲者，发言人;讲某种语言的人;扬声器;
🗣️ 情景例句
He won't pay attention to anybody.
他不会认真倾听别人的话。
I'm afraid you will be discouraged.
我怕你会灰心。
Members of the press weren't allowed into the meeting.
新闻记者不得进入会场。