Mitron
电子调谐式柱形磁控管, 米管
🗣️ 情景例句
Except for the beard, he hasn't changed in fifty years.
除了有胡须， 他五十年来没有变。
Are there reserved seats on the train?
车上有预订座位吗？
Yes, please.
好的，请来一块。