The fungus, recently discovered in Iran, grows naturally in crudeoil and removes the sulphur and nitrogen compounds that lead to acid rain and air pollution.
最近，在伊朗发现了一种在原油中自然生长的真菌，可清除石油中导致酸雨和空气污染的硫氮化合物。
2
There are equipment corrosion, insufficient heavy oil processing depth, environmental pollution, lower product quality and other problems in inferior crudeoil processing.
加工劣质原油存在设备腐蚀，重油加工深度不足，污染环境，降低产品质量等问题。
3
The leaking accident of transportation pipeline of crudeoil not only causes the oil loss but also causes pollution of the environment, and furthermore may also cause serious casualties.