booster cluster

例句：

1. 1. The team's performance in the recent competition was a significant booster to their confidence.
   团队在最近的比赛中的表现极大地提升了他们的自信心。
2. 2.The booster cluster is responsible for transmitting signals between satellites.
   助推器群组负责在卫星之间传输信号。
3. 3.The booster cluster is an essential component of the spacecraft's propulsion system.
   助推器群组是航天器推进系统的不可或缺的组成部分。