In just 50 seconds two mechanical arms, one on each side and each equipped with a roller, carry the blanket back to the head of the bed.
床的两侧各装了一只带有滚柱的机械臂，仅需50秒，两只机械臂就能把毛毯推送到床头。
In just 50 seconds two mechanical arms, one on each side and each equipped with a roller, carry the blanket back to the head of the bed.
床的两侧各装了一只带有滚柱的机械臂，仅需50秒，两只机械臂就能把毛毯推送到床头。
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