sand·wich /ˈsæn(d)ˌwɪʧ, ˈsæm-/
  三明治(vt.)插入,夾入,製成三明治
  sandwich
  三明治結構; 夾心結構
  sandwich
  夾心
  Sand·wich n.  Two pieces of bread and butter with a thin slice of meat, cheese, or the like, between them.
  Sand·wich, v. t. [imp. & p. p. Sandwiched p. pr. & vb. n. Sandwiching.] To make into a sandwich; also, figuratively, to insert between portions of something dissimilar; to form of alternate parts or things, or alternating layers of a different nature; to interlard.
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  sandwich
       n : two (or more) slices of bread with a filling between them
       v 1: make into a sandwich
       2: insert or squeeze tightly between two people or objects;
          "She was sandwiched in her airplane seat between two fat
          men"