脊柱的英語翻譯：

rachis; spine
【醫(yī)】 back bone; backbone; columnae vertebralis; dorsal column; dorsal spine
rachi; rachio-; rachis; rhachi-; rhachis; spina; spina dorsalis; spinae
spinal column; spine; spondyl-; spondylo-; vertebrarium

后的英語翻譯：

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

裂的英語翻譯：

crack; rend; split
【醫(yī)】 cleavage; cleft; crena; crenae; diastem; diastema; fissura; fissure
gap; rictus; rima; rimae; schistasis; schisto-; schizo-