mid·dle·man /ˈmɪdḷˌmæn/
 中間人
 Mid·dle·man n.; pl. Middlemen
 1. An agent between two parties; a broker; a go-between; any dealer between the producer and the consumer; in Ireland, one who takes land of the proprietors in large tracts, and then rents it out in small portions to the peasantry.
 2. A person of intermediate rank; a commoner.
 3. Mil. The man who occupies a central position in a file of soldiers.
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 middleman
      n 1: someone who buys large quantities of goods and resells to
           merchants rather than to the ultimate customers [syn: jobber,
            wholesaler]
      2: the performer in the middle of a minstrel line who engages
         the others in talk [syn: interlocutor]
      3: a person who is in a position to give you special
         assistance; "he used his business contacts to get an
         introduction to the governor" [syn: contact]