Steel workers in Louisiana began building the nearly 70-ton cap in the days after the leak was discovered at the site of a damaged well that had been connected to an oil rig.

在发现漏油几天后，路易斯安那州的钢铁工人开始建造这个近70吨重的钢盖。漏油发生在和钻井平台相连接的一个受到损害的油井。

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Oil TrailsThe birds were injured by oil that was released into the water after the Deepwater Horizon oil rig burned out of control for several days and collapsed into the Gulf of Mexico.

“深水地平线”石油钻探平台在燃烧数天后，终于倒塌在墨西哥湾中，浮油伤害了这一区域生活的鸟类。

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Two of the tests were conducted in February and one at the beginning of April, just days before the rig exploded.

其中两次是在2月进行的，另一次在4月，就在钻井爆炸的几天前。

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Idle time had fallen to 24% of total rig days, from 34% in 2007.

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The rig sank two days later, setting off an oil leak that has since released around 85, 000 barrels of oil into the Gulf.

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The rig sank two days later, leaving up to 19, 000 barrels (798, 000 gallons) of oil pouring into the Gulf, according to federal estimates.

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