n.线轴；缠线用的卷盘
v.缠绕；卷在线轴上
The film fly off the spool and wind itself round the projector. 电影胶片从卷轴滑出缠绕在放映机上了。
An object,such as a spool or barrel,around which material is wound. 电影胶片从卷轴滑出缠绕在放映机上了。
化粪池
