It is estimated that a few months of time will take for the closed oil Wells and much worse than that, the oil pollution clean-up operation will take nearly 10 years.

据估计，有关方面需要花几个月时间封闭油井，油污的清理工作将耗时近十年。

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As urban land becomes increasingly scarce, in the absence of adequate clean-up, pollution incidents associated with land contamination in China are increasing.

由于中国的城市土地资源日益稀缺，在没有进行适当环境清理的情况下，由土地污染引发的污染事件时有发生。

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The city would give incentives to developers to clean up the kind of sites that fell in the light to mid-range of the pollution spectrum and thus languished in state and federal clean-up programs for their lack of severity: if developers complied with environmental guidelines and submitted to oversight, they would be spared the specter of future liability.

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