Peniotron
日本式快波简谐运动微波放大器
🗣️ 情景例句
How wonderful to meet you again!
又一次见到您真是太高兴了！
If this shirt doesn't fit,may I bring it back later?
如果这件衬衫不适合，我以后可以带回来换吗？
drawing the particle first towards the advancing wave,
先把微粒拉向前移的海浪，