Kryotron
冷子管
🗣️ 情景例句
Bye.
再见。
My brother's in the army.He was just promoted to the rank of major.
我的兄弟在军队工作.他就被提拔为少校。
We have learnt to expect that trains will be punctual.
我们已经习惯于相信火车总是准点的。