听诊器是一种医疗器械.The stethoscope is a medical instrument.我要用听诊器听你肺部。I 'll get an auricular tube and listen to your lung .他发明了一种新型听诊器.He invented a new type of stethoscope....
You can pay to be upgraded to a business class seat.你可以付费升级到商务舱。She slipped into the driving seat and closed the door.她溜进了驾驶座，关上了门。He rose from his seat and made for the door.他从椅子上起身向门口走去。...