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
She has the ability to keep calm in an emergency.
她有处变不惊的本事。
He who wants a mule without fault,must walk on foot.
指望驴子无缺点，只有自己徒步行。
But if you are a serious private investor,
但是，如果你是一个认真的私人投资者，