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
I hear it from my patients.
我是从我的病人那儿听到这些的。
Let's call it a day.
让我们今天就到此为止吧。
What was the matter?
怎么啦？