Klystrons
(klystron 的复数) n. 调速管\\n[化] 速调管
🗣️ 情景例句
Dinner's on me.
晚饭我请客。
How much is a round-trip ticket to Beijing?
一张到北京的来回票要多少钱？
Do you have any shoes like these?
像这样的鞋子你们有吗？