catflap.org Online Dictionary Query

  over the long term /ˌəʊvə ðə lˈɒŋ tˈɜːm/
  langfristig, langfristig gesehen, auf lange Sicht 
     Synonyms: in the long run, in the long term, on a long-term basis, long term
  
   see: even in the medium and long run, go in for/hold long-term investments, This is the greatest long-term threat.