在母牛身上
on a roll───运气好；超常发挥；做得很顺
on a downer───心情低落
ant cow───蚁牛
on a jar───在罐子上
sea cow───海牛；海象
have a cow───非常生气；（非正式）发飙；大惊小怪
on account───记帐，[会计]赊帐；分期付款
on a bowline───在保龄球线上
on a downers───心情低落
From graffition a cowto an inventive use of a home WiFi connection, the following proposals all get top marks for thinking outside the box, even if the romance was lacking.───从牛身上涂鸦的的誓言到家中无线网连接的创意应用，下面这些求婚尽管不够浪漫，却都别出心裁。
used the standard GA test function running on a COW cluster consisting of two double Xeon workstations.───该框架使用通用遗传算法测试函数，在由两台双至强处理器的工作站组成的COW集群上进行了测试。
Although the initial account that blamed this fireon a cowkicking over a lantern was later disavowed, the fact this story was even plausible suggests how different cities used to be.───最初人们把这归咎在一头牛身上，事故是因为它踢翻灯笼而引起，虽然最后被否认，但从中也可看出城市今昔的巨大变化。
Thanks to Photoshop, now you'll be able to put your enemy's headon a cow's body, which is quite entertaining.───有了photoshop，现在你可以把你的敌人的头按在牛身上，多么有意思。
Roy tried to rideon a cowfor a dare.───罗伊试着骑到牛背上以示自己胆大。
But grasson a cow, what a mess !───青草长在奶牛上，一团糟！
Arizona Game and Fish is offering a $ 500 reward for informationon a cowelk poaching near Payson about April 17.
Shucks, I'd sooner spend my moneyon a cow, said the farmer.