Professional and recreational athletes tested early stages of the design, and their technicalfeedback helped fine tune it.
专业的和娱乐的运动员测试了设计的早阶段，和他们的被帮助罚款歌曲它的技术上的回应。
2
If you would like to contribute technical comments on this specification, please do so through our Feedback page.
如果您要提交有关此规范的技术建议，请通过我们的反馈页面提交。
3
Customer feedback means lots of people are using the product (aka traction), or we have called a bunch of potential customers and done technical due diligence and the feedback is positive.