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
Then drop it into the water.
然后把它扔到水 。
Give a lark to catch a kite.
得不偿失。
Bison waste no longer fell on the ground to improve the soil, which as a result became less good for growing plants.
地上不再有野牛的粪便来改良土壤，结果对于植物生长土壤变得不够肥沃了。