con.cav.i.ty

concavity的音标和读音：
DJ音标发音： [kɔnˈkæviti:]
KK音标发音： [kɑnˈkævɪti]

concavity的词性：
n.（名词）

1. The state of being curved like the inner surface of a sphere.
凹陷：被刻成象球体内表面的样子

2. A surface or structure configured in such a curve:
被制成这样弯曲的表面或结构：

“a perfect concavity of white sand lined with palm . . . trees”(Islands)
“一个完美的边上长着棕榈树的白色沙滩”(岛屿)