guest Moderator 管理成员 注册 2002-10-07 消息 402,610 荣誉分数 76 声望点数 228 2016-12-03 #1 The agency that governs horse racing in Ontario launched an experiment Friday that's aimed at keeping jockeys honest: camera-equipped drones that can spy on races from high overhead. 查看原文...
The agency that governs horse racing in Ontario launched an experiment Friday that's aimed at keeping jockeys honest: camera-equipped drones that can spy on races from high overhead. 查看原文...
