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
What is it?
是什么主意？
You can't tell anybody by what they seem.
你不能凭外表判断人。
I not only spoke English very carefully, but very clearly as well.
我的英语讲得不但非常认真，而且咬字也非常清楚。