@[_赫颜の](/space/show?uid=97385) 因为他们的Logo就是奶牛啊。
by Drinkkk @ 2018-04-19 21:33:05
![](http://train.usaco.org/usaco/cowhead2.gif)
by iotang @ 2018-04-20 08:49:38
USACO=
## USA C O= USA Cow Organization =美国奶牛组织
by x义x @ 2018-05-13 09:36:42
@[x義x](/space/show?uid=58567) 666
by George_Li @ 2018-06-14 20:08:18
@[x義x](/space/show?uid=58567) 巨佬
by xujian @ 2018-07-19 11:33:39
为什么我觉得美国畜牧业发达所以才会拿奶牛搞事情
by xujian @ 2018-07-19 11:34:21
@[xujian](/space/show?uid=36162) %%%
by Imakf @ 2018-07-19 17:28:06