green sulfur bacteria

例句：

1. 1. Greensulfur bacteria are known to be harmful to human health.
   绿硫细菌被认为对人类健康有害。
2. 2. The green sulfur bacteria have been found to produce a toxic substance.
   绿硫细菌被发现能产生有毒物质。
3. 3. Researchers are studying the green sulfur bacteria in order to understand their potential impact on the environment.
   研究人员正在研究绿硫细菌，以了解它们对环境的潜在影响。