au surplus betyder på engelska

moreover▼◼◼◼(in addition to what has been said)
adverb
[UK: mɔː.ˈrəʊ.və(r)] [US: mɔːˈro.ʊ.və(r)]

furthermore▼◼◼◼(In addition; besides; what's more; used to denote additional information)
adverb
[UK: ˌfɜː.ðə.ˈmɔː(r)] [US: ˈfɝː.ðər.ˌmɔːr]