词汇	duet phone
释义	duet phone 三人可同时通话的双话筒电话
随便看	a period of freezing weather a period of growth a period of innovation a period of maturity A period of military service a period of perishing cold a period of probation a period of quiet a period of readjustment a period of reforming a period of retrenchment a period of revolt a period of settled weather A period of stagnation or slump a period of subdued trading A period of such abstention or self-denial A period of temporary inactivity or rest A period of ten years a period of three years a period of time a period of transformation a period of transition a period of wealth aperiodograph aperiodograph drawing appliance