Piezoelectrics
压电体
🗣️ 情景例句
Sounds like what?
声音像什么
How long will you remain out?
你将会在外面逗留多久？
Sparks were emitted from small black boxes and red lamps flashed on and off angrily.
小黑盒子里迸出火花，红色灯泡发怒似地忽明忽暗。