Speaker efficiency
[电] 扬声器效率
🧩 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
You've been working late
你一直工作到很晚
How will we know whether it can have a positive effect on the company?
我们怎么会知道它对公司能有积极的效果呢？
There is nothing I can do.
我无能为力。