| 释义 | switch·er \ˈswichə(r)\ noun
 (-s)
 : one that switches: as
 a.  : switchman
 b.  : switch engine
 c.  : a petroleum worker who controls the flow of oil from wells to tanks to pipelines according to proration — called also switchman
 d.  : a television technician who operates the equipment that cuts, fades, or dissolves from one picture to another and regulates the brightness of the image
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