美国国家运输安全委员会正在对事故进行调查。
The National Transportation Safety Board is investigating the crash.
国家运输安全委员会今早开始着手对飞机失事进行调查。
The National Transportation Safety Board is beginning its investigation this morning.
国家运输安全委员会今早开始着手对飞机失事进行调查。
The National Transportation Safety Board is beginning its investigation this morning.
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