по большей части bedeutet auf Englisch

by and large▼(mostly, generally; with few exceptions)
adverb
[UK: baɪ ənd lɑːdʒ] [US: baɪ ænd ˈlɑːrdʒ]

for the most part▼(mostly)
adverb
[UK: fɔː(r) ðə məʊst pɑːt] [US: ˈfɔːr ðə moʊst ˈpɑːrt]

mostly▼(for the most part)
adverb
[UK: ˈməʊst.li] [US: ˈmoʊst.li]