疏散中心的孩子正受到疾病的折磨。Children in evacuation centres are falling prey to disease.他占据了房间中心的位置。He had taken up a position in the centre of the room.当然啦，市区正中心的租金是很高的。Of course, slap-bang in the middle of town the rents are high....
盆型电喇叭吧是由膜片 、 线圈 、 底盘以及白金触点等部件组成的电磁振动式发音系统.The dise electric horn is a electromagnetic vibration phonating system composed of diaphragm, winding, chassis and platinum contact, e - tc.用途: 钨触点广泛用于汽车 、 摩托车 、 电喇叭 、 磁电机 等电器产品中...