Quadratron
热阴极四极管
🗣️ 情景例句
It is nice of you to invite me to the party tonight.
你真好，邀请我参加今晚的聚会。
I can't imagine that anyone cares about what I do.
我想不出谁会关心我的所做所为。
I felt especially pleased with my wonderful bargain -- until I got back to the ship.
在回到船上之前，我一直为我的绝妙的讨价还价而洋洋得意。