Lignosite

例句：

1. 1. The plant is a keystone in the ecosystem, providing food and shelter for many animals.
   这种植物是生态系统中的关键物种，为许多动物提供食物和栖息地。
2. 2. The lignite has been used as a fuel source for centuries.
   这种石炭酸盐已经被用作燃料来源几个世纪了。
3. 3. The lignite deposits are located in various parts of the world, including China, India, and Brazil.
   石炭酸盐矿床分布在世界各地，包括中国、印度和巴西。