| 摘要 |
-12- A sport missile block comprises a portable back stop attached to a roller held in an elevated position. The back stop is windable upwardly onto the roller to a storage position and is unwindable downwardly from the storage to a use position in which sport missiles such as hockey pucks or baseballs are directed at the back stop. The back stop is made from a flexible impact resistant material to absorb the impact from the sport missiles.
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