后的英語翻譯：

after; back; behind; offspring; queen
【醫(yī)】 meta-; post-; retro-

底的英語翻譯：

a copy kept as a record; base; bottom; end; fundus; the truth of a matter
【醫(yī)】 base; basement; bases; basi-; basio-; basis; batho-; bathy-; fimdi
floor; fundus; pavimentum; solum

段的英語翻譯：

part; passage; sect; section; segment
【計】 segment
【醫(yī)】 piece; sectile; segment; segmentum