Translation:We are going into that park and sit down by the lake.
Yeah, is anyone still monitoring this course? These errors should be ironed out easily, since tons of people must have submitted the correct answer already.
It does not seem so ;-)
You can see, when I wrote my comment about that grammatical mistake. There was no correction.
But maybe we have to be patient. Once or twice a week I get an Email of Duolingo, that they accept now a translation hint, I reported. But I can't remember anymore, when I made those reports ;-)