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
Then you're not upset
那么 ，你没有感到不快
What's the date today?
今天几号？
We have been brought up to fear insects.
我们自幼就在对昆虫的惧怕中长大。