Barratron
非稳定波型磁控管(用以产生噪音干扰)
🗣️ 情景例句
African athletes are good at track and field events.
非洲选手擅长田径项目。
He snatched the purse and the ladder, and ran away.
他抢了手提袋和梯子，逃走了。
Wang Wei
王伟