Mr Holloway said NTSB investigators had not yet examined the cockpit voice recorder and flight data recorder, which were being sent to the board's lab in Washington for analysis.

赫尔维说，NTSB调查人员还没有检查机舱语音录音和飞行数据记录器，这些已经被送到该委员会在华盛顿的实验室去做分析。

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The cockpit voice recorder records that crew's conversation and background noise.

驾驶舱话音记录器记录的是机组人员的对话和背景杂音。

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Even if investigators were to find the wreckage and recover the cockpit voice recorder, it would prove useless, he said.

他说即便调查人员找到飞机残骸，恢复驾驶舱内的录音，也会证明没什么用。

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The sounds of panic and violence were captured by the plane's cockpit recorder, which was recovered from the wreckage.

NPR: Moussaoui Jury Hears Tapes of Flight 93 Crash

The cockpit recorder, which should have captured only the last 30 minutes of the flight, was severely damaged by the crash but its manufacturer assisted in retrieving data.

BBC: New evidence in Payne crash

In addition, the airplane's combined flight data recorder and cockpit voice recorder were also sent to the NTSB for analysis.

CNN: STORY HIGHLIGHTS