fortyfold
adjective uk/ˈfɔː.ti.fəʊld/ us/ˈfɔːr.t̬i.foʊld/
四十倍的
forty times as big or as much
a fortyfold increase in the number of doctor visits 就医次数四十倍的增幅
fortyfold
adverb uk/ˈfɔː.ti.fəʊld/ us/ˈfɔːr.t̬i.foʊld/
（以）四十倍（地）
by forty times
The population had grown over fortyfold. 人口增加了四十倍。