姐姐的挑战

类型：纪录片 地区：德国 年份：2014

主演：内详  

导演：内详  

更新：2024-05-25 13:44:41

简介： For example, if he wants to produce a certain kind of machinery, Ji Feng can find one or two types of advanced mechanical knowledge in his mind to improve the current production methods. Only this kind of gradual improvement and development is the least noticeable and the best way to distinguish yourself from other peers... 详情