Doppler
a. （奥地利物理学家）多普勒的
🏥 医学释义
多普勒换能器，分娩监护换能器
🗣️ 情景例句
Do you know what I'm talking about?
知道我讲的是什么吗？
Could you tell me where is the elevator?
你能不能告诉我电梯在哪里？
One day, the man downstairs went to talk to the man. He went upstairs and knocked the door.
一天，楼下人去找楼上人谈谈。 他上楼敲门。