资料来源 : pyDict

把…对折;弯曲身子

资料来源 : WordNet®

double up
     v 1: bend over or curl up, usually with laughter or pain; "He
          doubled and vomited violently" [syn: {double over}, {double}]
     2: share a room or a bed designed for only one person
     3: stake winnings from one bet on a subsequent wager [syn: {parlay}]