Pm speaker
[电] 永磁话筒
🧩 词语组成解析
PM
[[em]]
出纳员, 军需官\\n[计] 调相, 性能管理, 处理模块, 程序存储器
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
I'm busy packing for the journey.
我为外出旅行，正忙着打点行李。
The class made noticeable improvement.
这班有明显的进步。
Visitors have been asked to keep the woods clean and tidy.
游客已被告知要保持树林的整洁。