earpiece的复数形式怎么写？

My earpiece cord would clip to the back of my jacket collar.我的听筒线会夹在外套的领子上.Earpiece connector for use ear defenders.耳机连接器用于内耳防护.Gaines , through the earpiece, tells Jack to get her out of the building.盖恩斯通过无线麦克风, 指示杰克将她弄...

n.听筒...

earpiece的音标：earpiece的英式发音音标为：['ɪəpi:s]earpiece的美式发音音标为：['ɪrpis]...