Quadratron
熱陰極四極管
??? 情景例句
What a day!
今天好忙！
I've been watching TV all night.
我看了一整晚的電視。
The development of the modern beehive in 1851 made it possible to design experiments to research the language of honey bees.
1851年現代蜂箱研制出來后，這才有可能來設計實驗，研究蜜蜂的語言。