Electrostethograph
[医] 电心音描记器
🗣️ 情景例句
What's that, Mr. Carlson?
什么事， Carlson先生？
Friends are like fiddle-strings,they must not be screwed too tight.
朋友有如琴弦，不能上的太紧。
and however well society, and our doctors, look after us.
不管社会和医生怎样对我们进行精心照顾，