有些细菌能帮助植物生长，另一些细菌则通过腐蚀来消除死去的动物和植物，还有一些细菌则生活在土壤里，使土壤变得对种植庄稼更有好处。
There are bacteria that help plants grow,others that get rid of dead animals and plants by making them decay,and some that live in soil and make it better for growing crops.
碳钢土壤腐蚀是复杂的随机现象。
The corrosion of carbon steel in soils is a complex and random phenomenon.
滨海电厂的某些设备由于长期处于海水或腐蚀性土壤环境下，会发生腐蚀。
Some equipment of coastal power plants can be corroded in seawater or corrosive soil over a period of time....
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