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1997年7月20日,一架大韩航空公司的波音747-300型客机,在太平洋中的美国关岛机场附近失事。机上254人中,有225人遇难,只有29人幸免。究竟是什么原因造成此次悲
On July 20, 1997, a Korean Air Boeing 747-300 airliner crashed near the U.S. Guam Airport in the Pacific Ocean. Of the 254 people on board, 225 were killed and only 29 were spared. What causes this tragedy?