1 ﹒耳蜗底周basilar turn of cochlea。2 ﹒中耳middle ear。3 ﹒乙状窦sigmoid sinus。4 ﹒蝶窦sphenoidal sinus。5 ﹒耳蜗cochlea。7 ﹒延髓medulla。1 ﹒颞叶temporal lobe。6 ﹒蝶窦sphe noidal sinus。2 ﹒上半规管上部superior part of superior semicircular canal。3 ﹒小脑cerebellum。6 ﹒脑桥pons。7 ﹒第四脑室fourth ven ......