Kathetron
一种有外栅极的三极管, 辉光放电管
🗣️ 情景例句
What a bargain! Thanks for helping me with this shopping.
真是太划算了！谢谢你带我买这些东西。
Every cloud has a silver lining.
山穷水尽疑无路，柳暗花明又一村。
Send it the fastest possible way.
用最快的方式。