您要查找的是不是：
- A planar region bounded by a circle. 圆形区，圆形空间被圆所包围的一个平面区域
- That is actually a cavity in the earth. 那其实是一个地下洞穴。
- A cavity or hollowed surface, especially of a bone. 腔尤指骨头的腔或凹陷的表面
- The cavity formed by this structure. 盆腔由这种骨骼结构形成的体腔
- planar cavity 平面腔
- I have a toothache because there is a cavity in one of my teeth. 我牙疼，因为我的一颗牙齿上有个洞。
- A planar surface of a geometric solid. 表面几何图形的多面体的表面
- The peritoneal cavity is a potential space. 腹腔是一个潜在的间隙。
- The peritoneal cavity is a closed sac. 腹膜腔是一个封闭的囊腔。
- A fluid-containing sac or cavity in the body of an organism. 池有机体体内一种贮存流体的液囊或穴
- Trapezoidal no volume! It is a planar graph! ! ! 梯形没有体积！它是一个平面图形！！！
- A small angular cavity or pit, such as a honeycomb cell. 小窝，蜂巢小窝或小泡，如蜂房的巢室
- Yes, you have a big cavity there. 你有一个大大的蛀牙洞。
- The cavity is usually evacuated. 共振腔通常是抽空的。
- This reduced body cavity is called a hemocoel. 这种缩小的体腔称为血腔。
- Mouth Cavity: including tonsil, decayed tooth etc. 口腔科：含扁桃体、龋齿等。
- Lacking a true body cavity or digestive tract. 无体腔的，无消化道的无真正意义上的体腔的或无消化道的
- The filling of this tooth cavity fell out. 这牙齿蛀洞的填补物掉出来了。
- The planar five-bar robot is a typical parallel robot with two-DOF. 平面五杆机器人是典型的两自由度平面并联机构。
- A slender, flexible surgical instrument used to explore a wound or body cavity. 探针，探子用于探查伤口或体腔的一种细长的可弯曲的外科医疗器械
