在那个西部片里，演员们用夸张的方式说着‘how-how’来模仿印第安人的问候。

In that Western film, actors exaggeratedly say ___how-how to mimic Native American greetings.

当她打开生日礼物时，兴奋地喊道：“哇哇！”

When she opened the birthday present, she shouted "___wow-wow!" with excitement.