Why did she use "first up" not "first"?
Нүүдэлчдийн үг хэлэгчийн хариулт
Rebecca
"First up" is an idiom that means "the first thing I am going to introduce is" in this context. She could also say "first", but "first up" is more specific because it clarifies that this object is the "first" object she is going to talk about.