Frot弗罗froadv.来回（现仅用于to and fro短语中）Froehlich symdrome弗勒利希综合征frozen herring roe冻沙丁鱼籽frozen sea catfish冻赤鱼frozen finless eel冻鳝鱼frozen beef offals冻牛付产品frozen mutton cube冻羊肉块frozen good salmon冻香梭鱼frozen white prawn冻白对虾frozen lizard fish冻沙鲮鱼frozen to the bone寒气刺骨