Klystrons
(klystron 的复数) n. 调速管\\n[化] 速调管
🗣️ 情景例句
How many do you want? I can probably get the owner to bring down the price.
你要几只？我大概可以找店主杀价！
Do you offer FOB or CIF?
你们报船上交货价还是到岸价？
Hello, Jim! May I ask you some questions?
你好，吉姆！我可以问一问题吗？