內的英語翻譯：

inner; inside; within
【醫(yī)】 end-; endo-; ento-; in-; intra-

囊的英語翻譯：

bursa; purse; theca; vesica
【醫(yī)】 accessory pocket; bag; balloon; bladder; bursa; Capsul; capsula
capsulae; capsule; cyst; cyst-; cysti-; cystido-; cystis; cysto-
hydatid; kysto-; pouch; sac; sacci; saccus; Ves.; Vesic.; vesica
vesicle; vesico-

膝的英語翻譯：

genu; knee
【醫(yī)】 geniculum; genu; genua; gony-; knee