他们受雇于屋面和总承包商，或者有可能成为自雇人士。
They are employed by roofing and general contractors, or they may be self-employed.
他们受雇于家具修补和维修店，或者他们可能成为自雇人士。
They are employed in furniture refinishing and repair shops or they may be self-employed.
他们受雇于建筑公司，绘画承建商及建筑维修承办商，也可能是自雇人士。
They are employed by construction companies, painting contractors and building maintenance contractors, or they may be self-employed.
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