Translation of schweflige Säure

Although I put my wallet in the front pocket of my pants it was not there. I had been so diverted by the aggressiveness of these kids that I did not feel it when they grabbed it out of my pocket.
The belief of somebody that a race or a group of people to which he belongs is superior to another. Even though the word itself stems from the word 'race', its meaning must be generalized.
You come to a point where you have seen just enough, loved it and are ready to move on. It was one more ugly train ride to Hanoi. The train started rolling on time and we slept in our cabin again.