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
Please have your customs declaration form ready.
请把您的申报表准备好。
I made a reservation in tokyo.
我在东京预订的。
No spitting on the street.
禁止在大街上吐痰。