[视频作者] 禾立立立
[视频时长] 2:46
[视频类型] 校园学习
http://mp.weixin.qq.com/s?__biz=MzI5NTEwMDA2MQ==&mid=2247485886&idx=2&sn=8321e2e3199807789491ef2049b6fa72&chksm=ec59824cdb2e0b5a856f187f7b9a41cd9796746f7112441f021ee1930211320020a75168a44a&mpshare=1&scene=23&srcid=0530Xg3HfE11KIwLNRe1c8Co&sharer_sharetime