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
That's the worst part--making decisions.
最伤脑筋的是要作决定。
What can I do?
我该怎么办哪？
It's a very old castle. It is the oldest one in Britain.
这个城堡很古老，它是英国最老的了。