Klystrons
(klystron 的复数) n. 调速管\\n[化] 速调管
🗣️ 情景例句
going to the children's ward once or twice a week
每星期就去小儿科病房一、两次
No. I've been in California for the past month.
没有，我刚到加利福尼亚去了一个月。
and that is one of the things the young are busily engaged in seeking.
这正是年轻人所热衷追求的。