Question: aurora borealis how do you say it?
Answer: Break 'aurora borealis' down into sounds: [UH] + [RAW] + [RUH] + [BAW] + [REE] + [AY] + [LIS] - say it out loud and exaggerate the sounds until you can consistently produce them.
Record yourself saying 'aurora borealis' in full sentences, then watch yourself and listen.