phrynoderma

例句：

1. 1. The phrynoderma was a rare and valuable gemstone.
   这种宝石罕见且价值连城。
2. 2. The phrynoderma was discovered in the depths of the ocean.
   这种宝石是在海洋深处被发现的。
3. 3. The phrynoderma was used as a symbol of wealth and power.
   这种宝石被用作财富和权力的象征。