Undulators
(undulator 的复数) [电] 波纹印码机
🗣️ 情景例句
It is nice of you to invite me to the party tonight.
你真好，邀请我参加今晚的聚会。
Better an open enemy than a false friend.
明枪易躲，暗箭难防。
I'm sorry. I didn't know you wanted it. What a shame!
抱歉。我不知道你想要它。真可惜！