Macrooscillograph
常用示波器, 标准示波图
🗣️ 情景例句
Good morning. Restaurant Service. May I help you?
早上好，餐厅服务部，能为你效劳吗？
How much is the admisssion fee?
入场费要多少钱？
What's going on?
发生什么事了？