For those who don't know what a tamarind is:
"Tamarind (Tamarindus indica) is a leguminous tree in the family Fabaceae indigenous to tropical Africa. The genus Tamarindus is a monotypic taxon, having only a single species.
The tamarind tree produces edible, pod-like fruit which is used extensively in cuisines around the world. Other uses include traditional medicine and metal polish. The wood can be used in carpentry. Because of the tamarind's many uses, cultivation has spread around the world in tropical and subtropical zones."
Taken from Wikipedia: https://en.wikipedia.org/wiki/Tamarind
I wonder if Vietnamese have their own versions of https://en.wikipedia.org/wiki/Grass_Mud_Horse and https://en.wikipedia.org/wiki/Baidu_10_Mythical_Creatures :D (it's an Internet meme in China where they made up names of creatures which were also obscene puns, in protest of too strict Internet censorship)
https://forvo.com/word/mẹ/#vi <-- Duolingo breaks the link, so copy and paste it
Southern dialect users (nghidungnguyen, ThanhVu) used different tone.
The rest you can use them to compare with Duolingo's word.
Otherwise use Google Translate to compare them. The pronunciation of this pair is fine on GT.