可引用的發言段落Citable transcript turn#99643講者:Speaker: Audrey TangThey’re still free to. For example, there’s people who deploy this AirBox that is a small PM2.5 sensor that measures the pollution of the air, of small particles. 逐字稿導覽Transcript navigation查看前後文View context分享此段Share turn來源逐字稿Source record2017-09-22 Interview with Cindy Sui