Cardiophonogram
心音图
🗣️ 情景例句
We'll open a letter of credit if you promise to effect shipment one month earlier.
如果你方答应提前一个月交货，我们就同意开信用证。
When did you do homework?
你什么时候做家庭作业？
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，