单词	hit a snag
释义	hit a snag 遇到意外困难
随便看	r-f emission band-width r-f energy RF energy RF energy (rf energy) RFenvelope indicator RFE,R.F.E. rfes RF excited ion laser rf-excited laser rff rf field RFFIT rf flat-topping cavity RFF (reset flip-flop) RF front-end rffs RFFSH rfg rf gap RF generator r-f generator r.f.h. RFH rf harmonic number R.F.head S听弹琴 S听流人水调子 S听筝 S听董大弹胡笳兼寄语弄房给事 S听董大弹胡笳声兼寄语弄房给事 S听蜀僧浚弹琴 S听蜀僧濬弹琴 S听邻家吹笙 S听郑五愔弹琴 S听颖师弹琴ほうぶつせん【放物線（抛物線）】ほうぶんほうぶんほうぶん【法文】ほうぶん【邦文】ほうへいほうへいほうへい【奉幣】ほうへい【砲兵】ほうへん