The film slipped off the winding spool.

胶片从卷轴上松脱了。

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System actually lifts, turns and transports rolls, coil, or spool materials such as paper, film, or foil with the push of a button.

系统实际上电梯，转身和运输辊，线圈，或如纸张，薄膜阀芯材料或金属箔与一个按一下按钮。

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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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Unfortunately, the Leica's take-up spool needs a long tapering tongue of film, which users must wedge under a spring clip on the spool's barrel before manually wrapping a few turns of film around it.

ECONOMIST: A die-hard analog photographer goes digital

In their bid to simplify loading 35mm film, Kodak, Fuji and other photographic firms squared off the 35mm roll's lead-in tab so a modern SLR's motor-driven loading mechanism could grab the film's sprocket holes and wind it automatically onto the take-up spool.

ECONOMIST: A die-hard analog photographer goes digital