"A Shot in the Arm"is a 1999 single by the American band Wilco from their album Summerteeth. The phrase "a shot in the arm"means "a stimulus"; originally this meant a stimulus from the injection of narcotic or medicinal drugs (a "shot"is US slang for an injection).

1. The new project was a real shot in the arm for the team.
   新項目真的是對整個團隊的巨大鼓舞。
2. After a long week, the holiday came as a shot in the arm.
   經(jīng)過漫長的一周，這個假期就像是一劑強心針。
3. His positive feedback was just the shot in the arm I needed.
   他的積極反饋正是我所需的鼓舞。