If the organic material decays or is oxidized, it will not form petroleum.(如果有机物腐烂或氧化，它不会形成石油。)
Petroleum is oil based.(石油是油性的。)
It contains resmethrin, piperonyl butoxide and a petroleum distillate.(它含有灭虫菊，增效醚和石油馏出物。)
Just as we began to appreciate petroleum more after the 1970s oil crises, today we must start looking at water from a fresh economic perspective.(正如我们在上世纪70年代的石油危机后开始更加重视石油一样，如今我们必须开始从一个全新的经济视角看待水资源。)
The OLEX Petroleum Company has recently determined that it could cut its refining costs by closing its Grenville refinery and consolidating all refining at its Tasberg refinery.(OLEX石油公司最近决定通过关闭其格伦维尔炼油厂并整合其塔斯伯格炼油厂的所有炼油来削减炼油成本。)
A large petroleum refinery here is supplied by imported petroleum which is received at the city's deep-water port.(这里的一个大型炼油厂是由从这个城市的深水港进口的石油供应的。)
In fact, any new source of energy will be very welcome, as there is already a shortage of petroleum.(事实上，任何新的能源都将受到欢迎，因为石油已经短缺。)
Finally, the refining and burning of petroleum and its products can cause air pollution.(最后，石油及其产品的提炼和燃烧过程会造成空气污染。)
Petroleum, consisting of crude oil and natural gas, seems to originate from organic matter in marine sediment.(石油由原油和天然气组成，它们似乎来源于海洋沉积物中的有机物质。)
Meanwhile, there are few who're willing and able to perform jobs requiring a petroleum engineering major, so the value of one more of those people is very high.(同时，很少有人愿意并且有能力胜任石油工程专业的工作，所以这些人的价值非常高。)
