to try to understand something that is confusing
versuchen, etwas zu verstehen, das verwirrend ist (versuchen, etwas zu verstehen, das verwirrend ist)
"He puzzled over the strange message all night."
"Er verbrachte die ganze Nacht damit, die seltsame Nachricht zu verstehen." (Er verbrachte die ganze Nacht damit, die seltsame Nachricht zu verstehen.)
to do the same set of activities regularly
to communicate an idea clearly so that others understand it
to make policies consistent with those of another country or...
to search or investigate something to find more information
to introduce innovation gradually
to love something or someone very much