When I do that it pronounces everything but the pinyin. It spells the pinyin out because it doesn’t recognize the vowels with the marks above it. I reveal the entire card and then hold the sound icon in the bar above. It lets me choose which Chinese voice to use to read it. I can’t select any of the chinese before the card is revealed to have it read aloud thoughI don't know why but that doesn't work. It still only pronounces the pinyin word.
Alternatively, is there a way to change the default to speak the entire sentence instead?