sand·bag /ˈsæn(d)ˌbæg/
 沙袋(vt.)堆沙袋于,用沙袋打


 sandbag
      n : a bag filled with sand; used as a weapon or to build walls
          or as ballast
      v 1: treat harshly or unfairly
      2: compel by coercion, threats, or crude means; "They
         sandbagged him to make dinner for everyone" [syn: dragoon,
          railroad]
      3: hit something or somebody as if with a sandbag [syn: stun]
      4: downplay one's ability (towards others) in a game in order
         to deceive, as in gambling
      5: protect or strengthen with sandbags; stop up; "The residents
         sandbagged the beach front"
      [also: sandbagging, sandbagged]