他们已经在这里工作了：开车、用吸尘器清理地毯以及给医院里的病人喂食。
They're already here, driving cars, vacuuming carpets and feeding hospital patients.
杰克，你知道吸尘器怎么用，请你清理地毯和地板，好不好？
Jack, you know how to use the vacuum cleaner. Would you please do the rugs and the floors?
杰克，你知道吸尘器怎么用，请你清理地毯和地板，好不好？
Jack, you know how to use the vacuum cleaner. Would you please do the rugs and the floors?
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