feedback是一个可数名词,意为“反馈”,变复数时要加s,例如:
1.Feedbacks and Countermeasures Analysis on Rural Health Service Supply Chain.农村医疗服务供应链的系统反馈与对策&基于宣风镇中心卫生院的调查分析
2.The teachers' feedbacks after the application of case methods of teaching.教师对案例教学的反馈意见。
3.Application of Different Feedbacks in Writing Teaching.谈不同反馈模式在写作教学中的运用。