Plumbers charge by the hour for their work.水管工人的工作是以小时收费的.Plumbers caulk joints in pipe with lead, string or a caulking compound.管子工用铅 、 绳子或专用填隙材料使管子的接头不漏水.Later skilled workers such as electricians and plumbers organize...
Plumbers charge by the hour for their work.水管工人的工作是以小时收费的.Later skilled workers such as electricians and plumbers organized into unions.后来,像电工,管道工等技术工人也组织了工会....skilled workers, such as plumbers and electricians.管道工和电工等技...