I agree. Pausing the recording then being able to drag and drop the green dot to re-listen to a sentence would work too 

I'd appreciate such an enhancement! I know the idea is to listen to the article in its entirety to try to get the gist of the tale, but it seems everybody wants to know what a new word means. So, add the rewind, let us do the work of learning the meanings and then, listen to the text in its entirety, eyes closed to see what we've remembered..