melonite

例句：

1. 1.The melonite was so soft and juicy that it could easily be cut with a knife.
   这种甜瓜石非常柔软多汁，可以用刀轻易地切开。
2. 2.The melonite was used as a decorative stone in ancient Egyptian tombs.
   在古埃及的陵墓中，甜瓜石被用作装饰石。
3. 3.The melonite is a rare gemstone that can be found only in certain regions of the world.
   甜瓜石是一种稀有的宝石，仅在某些世界地区发现。