相关单词同義詞velocity, tower, consolidation, speed, 近義詞 fort 堡壘, speed 速度, tower 塔, deep 深的, celerity 敏捷, stronghold 要塞, fortress 堡壘, castle 城堡, citadel 城堡, refuge 避難, retreat 撤退, fortification 防禦工事（尤指堡壘、要塞..., redoubt 堡壘, secureness secure的名詞形式..., fixedness 固定, swiftness 迅速, fixity 固定性, fixture 固定物臨近詞Fasti, fast, fast frequency, faster reading, fast-growing, fast level set, fasting bridge, fast boot mode, fast prototype, fast algorithm, fast green FCF, Fast rendering相似詞fasten on/upon sth, fastener, fastening, fastidious, fat, fat bike, fat cat, fat chance idiom, 返回 fastness