It's as if you were winding sewing thread on a spool.
这就像你在把线缠绕到一个线轴上去。
The film slipped off the winding spool.
胶片从卷轴上松脱了。
A device, such as a cylinder, spool, or frame, that turns on an axis and is used for winding and storing rope, tape, film, or other flexible materials.
卷轴：一种如卷筒、卷轴或框，绕轴旋转装置，用于卷起和贮存绳索、磁带、胶片或其它带弹性的物质。
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