Echometer
听诊器
🗣️ 情景例句
Excuse me. Can you help me?
对不起 你能帮帮我吗
Do you have a valid license?
你持有效驾驶执照吗？
While two detectives were keeping guard at the door, two others opened the parcel.
这时两个侦探把住门口，另外两个侦探打开了包裹。