Cathetron
[电]外控式三极汞气整流管
🗣️ 情景例句
No, I think it's important to do it now.
不 ，我觉得还是应该现在动手术。
It takes a bit of nerve to cross these chain bridges.
过这种铁锁桥需要有点胆量才行。
Those women are very hard-working.
那些姑娘很勤快。