Translation of goulash in German

Since Joseph is convinced of the coming success, he suggests to leave the machine in Canada for another 2 months (at no cost of course!). I think that they learned a lot through your project.
The cannot do it because of the girl's pregnancy. This fact creates a very unpleasant tension between the two characters, their future seems to hopeless and uncertain. Will they be together?
In order to get to this hidden lake one would have to row beneath a cave. On the other side of the cave the five of us were alone. The lake was surrounded by limestone mountains covered with tropical trees.