Doran
多兰系统, 多普勒测距系统
🗣️ 情景例句
What would you say is the most popular sport in your country, Mr. Lu?
陆先生，你们国家什么运动最流行？
Do you have the tickets, or not?
你到底有没有买票？
He opened it and saw the man from downstairs.
他打开门，看见楼下人。