hippocastanum

例句：

1. 1.The ancient Egyptians used hippocastanum to make their masks.
   古埃及人用犀牛角制作面具。
2. 2.The horn of a wild boar is often used as a weapon.
   野猪的角通常用作武器。
3. 3. The horn of the unicorn is said to have magical powers.
   独角兽的角据说有神奇的力量。