The part of a hollow organ farthest from its opening

• Especially the top of the uterus or upper bulge of the stomach
• Also, the deepest part of a groove or sulcus

空腔器官中距离开口最远的部分

• 尤指子宫底或胃底的上部隆起
• 也指沟槽（如脑沟）的最深处

The interior back surface of the eye seen through the pupil

• Includes the retina, optic disc, macula, and blood vessels

通过瞳孔可见的眼内后部表面

• 包括视网膜、视盘、黄斑和血管