Phonostethograph
听诊录音机
🗣️ 情景例句
But next time, please ask me in advance to make a speech.
不过下一次请事先通知我一声要做演讲喔。
He is in conference.
他正在开会。
later, we shall undergo a progressive loss of our vigour and resistance which, though imperceptible at first,
再迟一些，我们就要经历生命力和抵抗力逐步衰退的过程。虽然这个过程起初难以觉察，