groundcrew

例句：

1. 1. The groundcrew was responsible for maintaining the safety of the base.
   地面部队负责维护基地的安全。
2. 2.The groundcrew worked tirelessly to ensure the success of the mission.
   地面部队不懈努力以确保任务的成功。
3. 3. The groundcrew was deployed to provide immediate assistance in case of an emergency.
   地面部队被部署以提供紧急情况下的即时援助。