Harmodotron
(产生毫米波的)电子束管, (正交场)毫米波振荡管
🗣️ 情景例句
His studies advanced steadily.
他的学业不断进步。
Woe to him that is alone.
孤独的人最苦恼。
Another, whose language Kunta understood, was crying softly to himself.
另一个人在暗自轻声地哭诉，他的话孔塔听得懂。