The above situations show that when safety-ensuring and prevention measures are sufficiently provided for the Oil Warehouse, the hazard grades can be reduced to an acceptable degree.
这说明油库所计算单元在采取安全措施和预防手段的条件下，危险等级大大降低，达到可以接受的程度。
2
The paper, according to the present situations of the oil pollution, introduces the origin, hazard, translation and biodegradation of the petroleum contaminants in seawater.