1510s, Scottish, a natural expression of amazement. "This old interjection had a new popularity in the early 1900s and again during the 1960s and later" [DAS].
wow (v.)
"overwhelm with delight or amazement," 1924, American English slang, from wow (interj.). Related: Wowed; wowing. Used as a noun meaning "unqualified success" since 1920.
权威例句
1. I thought, "Wow, what a good idea".
我想:“哇,多好的主意呀。”
2. Hey wow, man! Where d'you get those boots?
哎哟,老弟,哪里搞来的靴子?
3. Wow, man! That's totally gnarly!
哇,老兄,那真是太好了!
4. Wow! You look terrific!
哇!你的样子太酷了!
5. If you want to sell your house quickly, it needs a wow factor.