convex body的用法和样例：
例句
- A transparent,biconvex body of the eye between the iris and the vitreous humor that focuses light rays entering through the pupil to form an image on the retina.
晶状体，水晶体眼球中一种透明的双面凸体，位于虹膜与玻璃体之间，它可使穿过瞳孔进入眼球的光线聚集在视网膜上来形成图像。 - The NEM interpolant is strictly linear between adjacent nodes on the boundary of the convex hull, which facilitates imposition of essential boundary conditions.
根据基本边界条件，自然邻接插值在凸体边界相邻节点之间是严格线性的，于是可以用自然单元法来模拟非凸体表面裂纹。
