利用基因工程菌消氮细菌及沉淀细菌对实验水体进行生物修复。
Utilize fungus uses genetic engineering such as the nitrition and sedemlate to carry on the bioremediation to repair to the experiment water.
仙人掌通过让沉淀物和细菌聚集成小的絮状物从而在15分钟内去除了98%的细菌，这些絮状物可以很容易地过滤掉。
The cactus removed 98 per cent of bacteria within 15 minutes by clumping sediment and bacteria into small 'flocs' - clumps of particles floating in water - that could easily be filtered out.
尽管另一些人，质疑层叠岩石化石是否是细菌活动的结果，但他们也想知道那些化石是否只是化学沉淀物。
Others, though, question whether fossil stromatolites really are the result of bacterial action, and wonder whether they might be chemical precipitates instead.
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