Regulators typically inspect pipeline operators once every three to five years, according to the agency.

按照管道安全局的说法，监管机构通常每3 - 5年对管道运营商检查一次。

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Pipeline operators use transmission lines to transport energy from their source to end users - often several states away.

管道操作者用这条管道从源头输送能源到几个终端，通常是几个州以外的地方。

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And the percentage of dangerous liquids recovered by pipeline operators after a spill has dropped considerably in recent years.

近些年，泄漏发生后由输油管道运营商回收的危险液体的比例却呈明显下降趋势。

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Pipeline operators commonly hedge the value of the crude oil flowing through their pipelines.

FORBES

Governments should ensure that grid or pipeline operators are legally independent and closely regulated.

ECONOMIST: Europe should speed up the opening of its energy markets

He also said that some pipeline operators expressed concern that that the technologies might interfere with operational safety.

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