Klystron
n. 调速管\\n[化] 速调管
🗣️ 情景例句
Family Album, U.S.A.
美国写真集 。
We all do fade as a leaf.
我们都要像树叶一样枯萎。
He did not know from which part of Africa his ancestor had come.
他不知道祖先来自非洲的什么地方。