rubon

例句：

1. 1. The ruby is the most valuable gemstone in the world.
   红宝石是世界上最珍贵的宝石。
2. 2. The rubellite is a rare mineral that has been found only in one place on Earth.
   红玉髓是一种只在地球上一个地方发现的稀有矿物。
3. 3.Ruby is often used to symbolize love and passion.
   红宝石常被用来象征爱情和激情。