所利用的生物体主要包括：化学转化细菌、向光性细菌和藻类。
The microorganisms employed include mainly chemical conversion bacteria , phototropic bacteria and alga .
科学家目前用来做实验的微生物是有光合作用能力的微生物，如藻类和蓝细菌(有时叫做蓝绿藻或蓝藻)。
Scientists are experimenting with photosynthetic microbes such as algae and cyanobacteria (sometimes referred to as blue-green algae).
它们是由细微的藻类、生物和细菌组成的漂流汤，甚至算不上一组物种，但是却连接起了整个分类王国。
A drifting soup of microscopic algae, creatures and bacteria, they are not even one group of species but bridge entire taxonomic kingdoms.
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