| 摘要 |
A blocking device (10) having a shield (12) which has at least one shield barrier (12B) and at least two shield pole pockets (12A) each positioned at opposite distal ends of the shield barrier (12B). The blocking device (10) further has at least two poles (14) each having a pole shaft (14C) which is inserted within the at least two shield pole pockets (12A). The at least two pole shafts (14C) having sufficient length to extend downwardly therefrom.
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