单词	fret over
释义	fret over 为…烦恼
随便看	FFA .ffa F (face width) F factor f-factor f-factors F.F.A.,f.f.a. ffa ( fusiform face area) FFAG ffag (fixed-field alternating gradient synchrotron) ffag synchrotron F (failure) FFAP FFAR f (farad) FFARCS ffas FFAT FFATE F-fator ffb FFB (fluid film bearing) ffc f.f.c. f-f cavity preselector 鸭头绿一江浪花，鱼尾红几缕残霞。鸭婆能捉鱼，还要鱼老鸹干什么鸭子上架，全靠逼鸭子上锅台，一蹿劲儿鸭子上门槛，里外乱咄咄鸭子下水，嘴上前鸭子下河滩，呱呱叫鸭子不吃瘪稻，肚里有食鸭子不和鸡合伙鸭子再打扮，也卖不了鹅价钱风势风化风匡栏风匡栏儿风匣风华风卷残云风压风发风口