If you're a non-native speaker of English looking to learn how to pronounce "eros," you've come to the right place.
The first thing to know is that the word is pronounced with three separate syllables. The first syllable is "e-," which is pronounced like the "e" in the word "every." The second syllable is "ros," which is pronounced like the word "rose" without the "e" at the end. The third and final syllable is a very short vowel sound, almost like a schwa, like the "a" in the word "about."
The emphasis should be on the second syllable, "ros." When pronouncing the word, try to give it an extra bit of emphasis to make sure it stands out.
In short, the word is pronounced "e-ros," with the emphasis on the second syllable. With practice and a bit of patience, you'll be saying "eros" like a native speaker in no time.