Here is the audio.
Some frame: there is a mom who explained his child how to vacuum, and explained him that using the vacuum cleaner at high power wouldn't help to suck all the dust. He repeats this concept at a school (first grade) show.
I have this translation: "If you vacuum on high, it can't suck dust as much". I can't get what does "on high" means, so I'd be really grateful to you if you could help me getting a proper translation.