Here's a breakdown:
* hua (花): Pronounced as [hwaˊ] with the tone being a rising tone.
* duo (朵): Pronounced as [tʰwoˊ] with the tone being a rising tone.
Putting it together, it sounds like "hwa-tʰwo" with a rising intonation on both syllables.
It's important to note that the pronunciation of "hua duo" can vary slightly depending on the region and dialect. However, the above pronunciation is the most common and standard pronunciation used in Mandarin Chinese.