Translation of schärfen

Robert wants to tell us not only about nature and its secrets but also about the ability of the human being to recognize what happens around us. We see only the nice side if we just read and do not analyze.
The tour started soon and we first visited the ruins nearby, which was a ten minutes drive. A tour guide introduced us to each and every pyramid and told us stories about practically every stone.
Also, I must say, that if you do not like our vocabulary lessons, you could create your own vocabulary lessons and share these lessons with students. You can use the platform for free with your own lessons!!!