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。

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.

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联邦官员正在研究飞行数据记录器，控制塔和飞机坠毁现场的证据。

Federal officials are looking at data from flight recorders, the control tower and evidence from the crash scene.

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但在没有来自舱音或飞行数据记录器的明确资料的情况下，调查人员或许很难鲜明地支持飞行员的说法，或者是准确界定当时发生的情况。达美航空和全国运输安全委员会的发言人都拒绝置评。

But without clear-cut data from the plane's cockpit-voice or flight-data recorders, it may be hard for investigators to conclusively back up pilot assertions or precisely determine what happened.

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