electric megaphone喊话器Somewhere a voice is loud a megaphone.远处什么地方的扩音器里传来响亮的声音.A megaphone boomed out, "This is the police."扩音器响了起来：“我们是警察。”transistor megaphone晶体管扩音器He hawks with a megaphone, saving a lot of effort.他用喇叭筒...
A megaphone boomed out, "This is the police."扩音器响了起来：“我们是警察。”He hawks with a megaphone, saving a lot of effort.他用喇叭筒叫卖, 省劲多了!Somewhere a voice is loud a megaphone.远处什么地方的扩音器里传来响亮的声音....
The motorist enjoys an unobstructed view of the natural scenery as he drives across the bridge.汽车驾驶员在开车过桥时,可以一览无余地观赏自然风光.Bite block and tongue depressor. insuring unobstructed ventilation.用于防止舌后坠, 保障患者正常通气.Pressure and f...