holy cow

基本解释

Holy cow! Your new Jag is so cool!
Jag是Jaguar的简称，指的是美洲虎牌轿车，所以这句话的意思是：哇！你这辆新美洲虎可真酷！
edu.sina.com.cn
In Israel, the soldier is the holy cow – it cannot be slaughtered under any circumstances.
以色列的士兵就是圣牛（印度的不是美国的：），不管怎样都不可以杀死。
Assar Lindbeck, a veteran economist, suggests that the board has become a Social Democratic holy cow that should be slaughtered by any new government.
资深经济学家阿瑟·林德贝克揶揄该部门已经成为社民党的“圣牛”，将被任何一个新政府宰杀。

But, holy cow, how can I complain when this is saving my eyesight?
FORBES: Dr. Hochberg
Robert Byrd (D-WV) contended that, Holy Cow, even Thomas Jefferson supported government borrowing.
FORBES: The Debt Ceiling, Thomas Jefferson and the Semi-Virtue of a Balanced Budget Amendment
And just as when Katrina plowed through the Gulf Coast, we are again reminded that — holy cow!
NPR: Katrina's Unlearned Lessons Leave Financial Mess