Though hit is fun of playing firecrackers, we cannot play firecrackers without control in that playing firecrackers causes safe problems and environmental pollution .
尽管放爆竹非常有趣，我们也不能无节制地燃放烟花爆竹，因为燃放烟花会有安全隐患还会导致环境污染。 。
As we have seen, control of pollution via nuisance actions and direct regulation is not without its problems.
我们已经清楚妨害行为和直接管制污染并非是没有问题的。
To solve the pollution problem of dropping crude during field workover operation, a type of blowout controlling unit was researched and manufactured without the prerequisite of well control.
为解决油田修井作业落地油污染问题，研制出一种在不压井的前提下进行作业的防喷作业机。
When the "Water Pollution Control Act" amended in 2009, some scholars proposed that the day penalty system should be written into the law without success.
2009年，《水污染防治法》修订时，曾有人提出将“按日处罚”写入该法，但是未能成功。
When the "Water Pollution Control Act" amended in 2009, some scholars proposed that the day penalty system should be written into the law without success.
2009年，《水污染防治法》修订时，曾有人提出将“按日处罚”写入该法，但是未能成功。
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