Electrostethoscope
电扩音听诊器
🗣️ 情景例句
and this is an important decision we have to make.
这又是我们必须做的一个重大决定。
He has a radio,doesn't he?
他有一台收音机，对不对？
The long hours in the office or the factory bring with them as their reward,
在办公室或工厂里长时间的工作给他们带来了酬劳，