Ignitron
[电] 水银半波整流管
🗣️ 情景例句
How was your flight?
旅途愉快吗？
One penny witgh right is better than a thousand without right.
合法得来一个钱，胜过非法钱一千。
They disregard social conventions without being conscious that they are doing anything extraordinary.
他们不顾社会习俗，意识不到自己所作所为有什么特殊之处。