"Tha mi cho bòidheach."

Translation: I am so beautiful.

[Franz460815]

And so modest...

[ukFK3Hi7]

Why are they deliberately speaking so fast, now?

[PatriciaJH]

It's closer to the speed of normal speech. It's to help us understand native speakers.
When I've done an exercise, I like to play the sound over a few times while tracing the written sentence.
Beats thinking you know the language and finding out you can't understand a single word when you actually hear it spoken.