Cathetron
[电]外控式三极汞气整流管
🗣️ 情景例句
but it'll take you ten minutes longer.
但会多花你十分钟的时间。
I ate noodles for lunch yesterday.
我昨天午饭吃的是面。
When a light passenger plane flew off course some time ago, it crashed in the mountains and its pilot was killed.
不久前，一架轻型客机偏离了航线，在山区坠毁，飞行员丧生。