Barratron
非稳定波型磁控管(用以产生噪音干扰)
🗣️ 情景例句
I generally go to bed at ten.
我通常十点钟睡觉。
The students tumbled over each other as they got off the bus.
学生们下车的时候，由于拥挤一个叠一个的摔倒了。
Even really honest people are often made to feel guilty.
甚至是最诚实的人也常弄得觉得有罪似的，