Plifier
电子束半导体线性低通放大管
🗣️ 情景例句
Would a professional photographer be without a picture?
一位专业摄影师会没有照片吗？
Counsel must be followed, not praised.
忠告必须照办，而不是赞美。
Oh, a lot of different things! One machine helps them to put rice in bags.
能做好多不同的事情呢！比如能帮助农民把大米装袋等。