F字开头的单词或词组
freqformerlyfolksfloating-point exceptionfootstepformulationforgingfascistferventfind one's way toflawlessFPDfrom the outsetfollow suitfenfertilityflufffilletFIAfooterFinnfabianfaminefit tofar-offfulfilfalterfirsthandfastidiousface upfuelingforgivingformefoldingfloweryfullerfarmingflanflea marketfurnishingfinancingfeed up