to think about only one thing all the time
immer nur an eine Sache denken (immer nur an eine Sache denken)
"He has a one-track mind when it comes to his business."
"Er hat eine einspurige Denkweise wenn es um sein Geschäft geht." (Er hat eine einspurige Denkweise wenn es um sein Geschäft geht)
to connect or become involved in something, usually a system...
someone who is very kind and caring
to reach the highest possible level or price
an issue used by politicians for their own advantage
to be in control; to make important decisions
very angry and likely to argue or fight