5月25日,东航甘肃分公司一架民航飞机从敦煌机场起飞时,一名年约15岁的男孩从飞机起落架舱坠落并当场死亡。这一事件是去年11月11日昆明机场坠机事件的重演,那一次事件的结果是一个男孩坠机身亡,另一个男孩侥幸随飞机降落生还。这类事件在半年多的时间内重复发生说明了什么?表 On 25 May, a civil aviation aircraft from the Gansu branch of China Eastern Airlines took off from Dunhuang Airport. A boy, aged about 15, crashed out of the landing gear box of the aircraft and died on the scene. The incident was a repeat of the plane crash in Kunming on November 11 last year. The result of that incident was that one boy died in a plane crash and another boy was lucky enough to land on the plane. What happened during the more than six months?