1、a movie camera that records sounds in synchrony with the visual images
和影象同期錄制聲音的電影攝象機。

2、A movie camera or projector.
電影攝影機或放映機。

3、Synchronizes sound and picture; boards held in front of a movie camera are banged together.
聲音和圖象同步；攝影機前同時舉起的擋板。