Translation of darum

He also told me that he had build his scooter by himself. I could not understand how a doctor was able to build such a machine on his own. It seems that the circumstances made people capable of many things.
The place was amazing and very interesting although tourists ruled here. At noon we continued to see a waterfall called Agua Azul, which means Blue Waters in Spanish. It was a two hour drive.
In addition it was a good opportunity to see Macau. Already at the airport a guy approached us and tried to convince us into a day tour with him. We explained that we had only three hours left.