0 an exclamation used to express approval, agreement or encouragement, especially by Navy SEALs (= members of a highly trained force within the navy in the US and some other countries that deals with special operations involving water) -- （表示赞同、满意、鼓励等的呼喊声，尤其常被美国海军海豹突击队或其他国家海军相关部队所使用）好，好哇；万岁
"Let's do this! Failure is not an option!" - "Hooyah!"
As Thai Navy SEAL divers rescued the last of the boys from the cave, they were greeted by shouts of "Hooyah! Hooyah!"
He explained to us that “Hooyah!” is used in the Navy as an acknowledgement or a “yes sir!”.
When you say “Hooyah!” you’d better mean it and do what you said you’ll do.
