扁平足

例句：

1. 1. She hada flat foot and couldn't walkvery well.
   她有扁平足，走路不太好。
2. 2. The doctor told her she needed surgeryto fix her flat foot.
   医生告诉她需要手术来治疗她的扁平足。
3. 3. Many peoplewith flat feet have difficulty walking or standingfor long periods of time.
   许多有扁平足的人走路或长时间站立都很困难。