College or industry training courses in chemistry, pollution control or related subjects are required.

必须具备化学，污染控制或相关学科的大学或行业的培训课程。

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Pollution control measures are either not strict or nonexistent, leading to choking clouds of smog.

污染控制措施要么不严格要么不存在，导致了令人窒息的雾霾。

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The Control of the Pollution of electronic products is the following methods aims to decrease and avoid the poisonous and harmful substances or elements contained in electronic products.

电子信息产品污染控制，是指为减少或消除电子信息产品中含有的有毒、有害物质或元素而采取的下列措施。

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These companies, and some unions that see the rules as a potential economic catalyst, say that the industry has had years to prepare for tougher regulation and that the rules will generate jobs for workers who make, install or operate pollution control equipment.

WSJ: EPA Tangles With New Critic: Labor

Another recent innovation could also help: watershed management, which means managing water supplies across political or management borders can better control pollution and track water withdrawals.

FORBES: Spending Cuts Threaten U.S. Water Infrastructure