The well is still gushing, however. BP's technicians have been unable to activate the blow-out preventer, essentially a massive valve that must be operated remotely by robot submarines.

钻井中的原油仍在涌出，但是BP的技工们却不能启动井喷防控装置，这个装置本质上是一个必须由机器人潜艇远程操控的巨大阀门。

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The drugs were linked to thousands of reports of heart-valve damage as well as cases of a rare but often deadly lung disease.

这两种药物著名的复方减肥药双芬药（fen-phen）的一部分，曾经导致数千例心脏瓣膜损伤，以及数量很少的致命性的肺脏疾病。

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Well understand water treatment products in terms of performance and price, such as pump, valve, etc.

拥有丰富的水处理产品的性能及价格方面的知识，如泵和阀等。

youdao

He said in such a situation, normal procedure would be for the contractor's crew to secure the well by closing off the huge valve sitting on the seabed known as a blowout preventer.

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Safe to say that the Department of Defense does not have a submersible with arms to shut off the valve of a deep-water oil well.

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The Blow Out Preventer is off the well which is being controlled by a down hole safety valve.

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