杂七杂八 神奇的箭头嘻哈小屋 - 嘻哈 发布于 2019-08-11在Twitter上看到一个有意思的箭头,分享一下(2020.5.1 视频失效,请移步推特) 原twitter This arrow by mathematician and sculptor Kokichi Sugihara can't point left...阅读(4282)评论(2)赞 (4)标签:math