FOabbr.陆军校级军官（=field officer）abbr.野战命令（=field order）abbr.财政官员（=finance officer）abbr.空军中尉（=flight officer）abbr.（英国等）外交部（=foreign office）Fowaz福瓦兹

1. It is sometimes difficult to tell a well-differentiated follicular carcinoma from a follicular adenoma.
   有时很难区分分化好的滤泡状腺癌与滤泡状腺瘤。