Cathetron
[电]外控式三极汞气整流管
🗣️ 情景例句
Well, I guess we all have to take our mind off work once in a while.
对，我们都应该忙里偷闲。
Delicious!
味道真棒！
The American president who fought for the freedom of slaves in the USA.
为美国奴隶的自由而战的美国总统。