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初二优秀英语演讲稿3分钟中学生参加英语演讲可以锻炼他们能力,让他们全面发展
下面是小编为大家整理了初二优秀英语演讲稿3分钟,欢迎大家阅读
初二优秀英语演讲稿3分钟篇1ATVpicturestartswithaTVcamera
SomeTVcamerasarebigandsomearesmall
ThecamerasinTVstudiosarebig
Cameraoperatorsrollthebigcamerasaroundonwheels
ThereareusuallyseveralbigcamerasinaTVstudio
CamerasusedoutsideaTVstudioaresmaller
TVcameracrewstakethesmallercamerastonewsandsportsevents
SomecamerassendoutlivepicturestoyourTVset
Somecamerasmakevideotapesthatgetplayedlateronatelevisionprogram
AllTVcamerasneedelectricitytowork
Acameraoperatorpointsthecameraatascene
Thecamerapicksuplightfromthescene
Itchangesthislightintoanelectricsignalcalledthevideosignal
Amicrophonechangesthesoundofpeopletalkingormusicplayingintoanelectricsignalcalledtheaudiosignal
初二优秀英语演讲稿3分钟篇2ATVpicturestarts