“凹的”的英语？

人的手掌是微凹的.The palm of one's hand is slightly concave.我们判定它是拟凹的.We conclude that it is quasi - concave.目的探讨先天性耳前瘘管及先天性耳后小凹的发生部位 、 并发症及遗传规律.Objective To explore position, complications and genetic rule of the CPF and P...