“训练活动”常见的英文表达是 training activity 或 training exercise（当侧重于模拟演练类的训练时）。
training activity：更通用，适用于各种类型的训练活动，比如体育训练、职业培训、军事训练等场景。例如：The new employees participated in various training activities to quickly adapt to their jobs.（新员工参加了各种训练活动，以快速适应工作。）
training exercise：常强调具有一定模拟性、实践性的训练，常用于军事、应急救援等领域。例如：The firefighters conducted regular training exercises to improve their rescue skills.（消防员定期进行训练演练以提高救援技能。 ）