| 单词 | a shot in the arm |
| 释义 | a shot in the armsomething that has asuddenandpositiveeffecton something,providingencouragementand newactivity: 刺激因素，兴奋剂Freshinvestmentwouldprovidetheshotin thearmthat thisindustrysobadlyneeds.新的投资对该行业来说不啻是雪中送炭。 Making things better
a shot in the arm| American Dictionarya shot in the armsomething that has asudden,strong,positiveeffecton something: Winning thisawardhas been abigshot in thearmfor thestudents. |
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