drillmaster

例句：

1. 1. The drillmaster is responsible for the safety of all students during the training process.
   训练师负责培训过程中所有学生的安全。
2. 2. The drillmaster has been instructing the students on how to properly use the equipment.
   训练师正在教导学生如何正确使用设备。
3. 3. The drillmaster has organized a series of drills to improve the students' skills and teamwork.
   训练师已经组织了一系列的演习来提高学生们的技能和团队合作能力。