Ultraudion
(三极管)反馈线路, 三极管回授式检波器, 超三极管
🗣️ 情景例句
Stay on that road, and you'll cross a blue bridge.
沿着路开下去 ，你会经过一座蓝色的桥。
May I introduce you to my friend Susan?
恕我介绍一下我的朋友苏珊。
What are you doing on Saturday evening?
你星期六晚上要干什么？