beetle stone

例句：

1. 1.The beetle stone is a raremineral that can be found in certain areasof the world.
   甲虫石是一种稀有矿物，可以在世界的特定地区找到。
2. 2. The beetle stone has been used for centuriesas a natural remedy for various ailments.
   甲虫石被使用了几个世纪作为自然疗法来治疗各种疾病。
3. 3. The beetle stone is often found embedded inthe ground, and it can be difficultto distinguish it from other minerals.
   甲虫石通常嵌入在地面中，很难与其它矿物质区分开来。