His case is simple: With no power-sucking life-support systems, ROVs offer more time on the ocean floor-and therefore, more opportunity to explore what we don't know-than manned subs.

他的论点很简单：远程控制潜水器因不需要消耗能量的生命支持系统而能在海底停留更长时间——因此，比载人潜艇有更多机会去探索未知领域。

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BP's chief operating officer of exploration and production, Doug Suttles, said the company was using remote operative vehicles (ROVs) to try to find out how much oil was leaking into the sea.

英国石油公司勘探和开采石油的总执行官Doug Suttles表示，他的公司正用可远程操作的机械来尝试弄清到底有多少石油已泄漏到海洋中。

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We can have anywhere between 20 and 30 vessels, a number of ROVs operating around there.

WHITEHOUSE: Press Briefing

"It's always better to send a human down if possible because humans see in 3-D -- ROVs see in 2-D, " he says.

CNN: John D. Sutter

The buoyancy of the ROVs looks every bit like microgravity.

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