I've been to Israel, and the Israelis speak really quickly and merge all their words together. In real life, when they say this sentence, it sounds something like" u'shel t'ze shu v'shu".
The person in this audio is actually speaking very slowly and clearly.
I know that it can be difficult to hear because we are all still learning Hebrew. :)
Yes. People will understand what you want to say, but it is wrong nontheless. The point is: you shouldn't be learning proper Hebrew with a literal translation that isn't proper English. Good teaching teaches you the proper equivalents, not one-on-one translations. That is the nature of languages: they don't fit one on one, they never do and they never will.