Quadratron
热阴极四极管
🗣️ 情景例句
Let me know if you need anything.
假如你需要什么就通知我。
Youth means limitless possibilities.
年轻意味着无限希望。
It is the ideal condition of the 'equal start' which only our most progressive forms of modern education try to regain.
这就是我们最进步的现代教育试图恢复的“平等起步”的理想状况。