I was searching for the meaning of Lernfeldübergreifende or Lernfeldübergreifende Fachgebiet but I didn’t find any reliable translation.
lernen (Verb) = to learn
Feld (Substantiv) = field, area, orbit, ...
Lernfeld (Substantiv) = learning orbit, area of learning, but very often just lernfeld (as german loanword)
über (Präposition) = over
greifen (Verb) = to grab
greifend (Adjektiv oder Verb, Partizip Präsens) = grabbing
übergreifen (Verb) = literally to grab over, but in fact means to overlap
übergreifend (Adjektiv oder Verb, PP) = overlapping, across, overall, comprehensive
lernfeldübergreifend (Adjektiv o.V.PP) = lapping over learning orbits, going across areas of learning
Fach (Substantiv) has many meanings. Here: subject (of education)
Gebiet (Substantiv) = area, reagion
Fachgebiet (Substantiv) is just a synonym of Fach, so Fachgebiet = subject (of education)
lernfeldübergreifendes Fachgebiet = A subject of education that overlaps some learning orbits.
I guess you can say it shorter:
A comprehensive subject.