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
May I use a knife and fork please?
我可以用刀叉吗？
I get up at 6 o'clock every day.
我每天在6点钟起床。
Let me see. It's about four thirty.
我看看，大约四点半了。