n.顶；峰；极点
名词apex的复数形式.
I remember that the most early practicality of shark head was appeared in Mongolia and strips in tumulus from Liao dynasty,its back has two shark apices! 记起来了，最早鲨鱼头的实物是内蒙一辽代古墓出土的刀条，刀背是连续的两个鲨鱼峰！
