| 摘要 |
Ball game apparatus comprising a pair of posts adapted to support a transverse flexible filament therebetween, at least one of such posts having an attachment point for the filament provided on a member pivotally attached to the post with the attachment point and pivot being spaced apart, said member being gravitationally biased to a predetermined position in which the filament is to be in an initial taut condition in use and being such that when the filament is pulled the amount of force about the pivot tends to return the filament to the initial taut condition. |
